IV. ASTRONOMY AND GEODESY, continued :

SOCIÉTÉ ASTRONOMIQUE de FRANCE: BULLETIN-v. No. 194.

1617 SVANBERG (Jöns) EXPOSITION des OPÉRATIONS faites en LAPPONIE, pour la Détermination d'un Arc du Méridien, 1801-3, par MM. OFVERBOM, SVANBERG, HOLMQUIST, et PALANDER; with 3 plates, 8vo. calf, with auto., armorial bookplate, notes, and references by JOHN LEE, Q.C., F.R.S., F.S.A., also auto. of Prof. Robert Woodhouse, F.R.S. (RARE), 128 6d Stockholm, 1805

'It is well known that the Lapland arc was measured at the beginning of the present century by Svanberg and others under the direction of the Stockholm Academy of Sciences. Lalande alludes to the early stages of this operation. Svanberg obtained a decidedly shorter length for a degree of the meridian than that of Maupertuis, namely 57196.159 instead of 57437.9 toises; but the middle points of the two degrees are not quite identical.'-I. Todhunter, F. R.S. 1618 TODD (David P., Amherst Coll.) STARS and TELESCOPES: a Handbook of Popular Astronomy, founded on the 9th Edition of LYNN'S Celestial Motions, with coloured frontispiece, and numerous plates and woodcuts (including many portraits), post 8vo. cl. gilt, 4s 6d (p. 8s 6d nett) Boston [Mass.], 1899 1619_TODHUNTER (Isaac, F.R.S., St. John's Coll., Cantab.) HISTORY of the MATHEMATICAL THEORIES of ATTRACTION, and the FIGURE of the EARTH, from NEWTON to LAPLACE, with diagrams, 2 thick vols. 8vo. cl., uncut (VERY SCARCE), £3. 1873 ANOTHER COPY, 2 vols. cl., with notes by Lord Justice Stirling, F.R.S., £3. 3s An invaluable work, the first comprehensive history on the subject. 'Although much has been published on the History of Astronomy, yet the progress of the mathematical development on the history of attraction has been left almost untouched.'-Preface. 1621 TROMHOLT (Sophus) CATALOG der in Norwegen bis Juni 1878 beobachteten NORDLICHTER, nach dem Tode des Verfassers herausgegeben von J. FR. SCHROETER, roy. 4to. (pp. xxiii + 422), sewn, 10s Kristiania, 1902 One of the most valuable catalogues of aurora boreales. 1622 TURNER (Herbert Hall, F.R.S., Savilian Prof. Astronomy, Oxon.) ASTRONOMICAL DISCOVERY, with 15 portraits and plates, 8vo. cl., 7s (p. 10s 6d nett) 1904

1620

1623

1624

Containing chapters on Uranus and Eros; Discovery of Neptune; Bradley's Discoveries; Accidental Discoveries; Schwabe and the Sun-Spot Period; and the Variation of Latitude.

The GREAT STAR MAP: a brief general Account of the International Project known as the Astrographic Chart, with frontispiece of Cluster M. 3. Canes Venatici by G. W. Ritchie, cr. 8vo. cl., 28

1912

MODERN ASTRONOMY: Some Account of the Revolution of the last Quarter of a Century, with 30 plates and other illustrations, cr. 8vo. cl., 3s (p. 6s nett) v. the OBSERVATORY, Nos. 162-3.

1901

1625 WALLACE (William, F.R.S.E., Prof. Mathematics, Edin.) GEOMETRICAL THEOREMS and ANALYTICAL FORMULE, with their Application to the SOLUTION of GEODETICAL PROBLEMS, and a Description of two COPYING INSTRUMENTS, with 3 folding plates, and woodcuts, 8vo. cl., with author's inscr. to Robert Main, pr., F.R.S. (scarce), 6s 6d Edin., 1839

The appendix describes the author's inventions, the eidograph, for copying plans and other drawings, and the chorograph, for describing on paper any triangle having one side and all its angles given. WASHBURN OBSERVATORY-v. No. 209.

WASHINGTON ASTRONOMICAL and METEOROLOGICAL OBSERVATIONS— v. No. 210.

1626 [WILKINS (John, 14th Bp. of Chester, first Sec. R. S.)] The DISCOVERY of a WORLD in the MOONE, or a Discourse tending to prove, that 'tis probable there may be another Habitable World in that Planet, first edition, with frontispiece, woodcuts, and diagrams, 18mo. calf gilt (a few wormholes in blank margin, otherwise a LARGE AND VERY FINE COPY); very rare, £3. 3s E. G. for Michael Sparke and Edward Forrest, 1638 1627 [- SECOND EDITION :] The DISCOVERY of a NEW WORLD, or, a Discourse tending to prove, that 'tis probable there may be another HABITABLE WORLD in the MOONE, with a Discourse concerning the Possibility of a PASSAGE thither; the third Impression, enlarged, with fine astronomical frontispiece with Copernicus, Galileo, and Kepler, by W. MARSHALL, and woodcuts: DISCOURSE Concerning a NEW PLANET. Tending to prove, That 'tis probable our Earth is one of the Planets, first edition, with woodcuts, and engraving on copper-2 vols. sm. 8vo. in 1, sprinkled calf (LARGE AND VERY SOUND COPIES); rare, £1. 10s J. Maynard, 1640

1628

1629

ANOTHER COPY, 2 vols. in 1, old tree-calf (back damaged), £1. 5s

The 'Discourse' is a stout defence of the Copernican system, by no means generally accepted at this time. Although mentioning 'third Impression', this is really the second edition of the first work, and the first collected edition.

This edition of the Discovery has the 14th Proposition, famous in the history of airmanship, which is not included in the first: That tis possible for some of our posteritie, to find out a conveyance to the other world; and if there be inhabitants there, to have commerce with them.' The 13th Proposition, however, is shortened in this edition. The conveyance suggested is a 'flying Chariot', of which the particulars of construction are given in the Mathematicall Magick' (v. ENGINEERING, post). The author supposes a natural passage to the moon, whence he imagines locusts to come, and whither he supposes birds to migrate.

FOURTH [LAST] EDITION, corrected and amended, with frontispiece and woodcuts, 2 vols. sm. 8vo. in 1, old calf, newly rebacked (front. and some ll. soiled), 17s 6d J. Gillibrand, 1684 1630 [- -] Le MONDE dans la LUNE, divisé en deux Livres. Le Premier, prouuant que la Lune peut estre un Monde. Le Second, Que la Terre peut-estre une Planette. De la Traduction du Sr [J.] DE LA MONTAGNE; with engraved frontispiece, and woodcuts, thick 12mo. fine copy in old calf gilt (RARE), £1. 5s Rouen, Jacques Cailloué, 1656

"This translation, bearing the illustrious name of Montagne, is scarce, and was unknown to Lalande. The preface, by Montagne, is written with great freedom aud courage.'-Libri Catalogue.

The lax M. Libri here had MONTAIGNE in his head, and makes himself guilty of a singular chronological blunder, since Montaigne died in 1592.

IV. ASTRONOMY AND GEODESY, continued :—

Leipzig, 1895

1632 WISLICENUS (Walter F.; Univ. Strasbourg) ASTRONOMISCHE CHRONOLOGIE : ein Hülfsbuch für Historiker, Archaeologen, und Astronomen, 8vo. cl., 3s (p. M. 5) 1633 WOLF (Charles, de l'Institut; Observatoire de Paris) Les HYPOTHESES COSMOGONIQUES: Examen des Théories scientifiques modernes sur l'Origine des Mondes, suivi de la Traduction de la THÉORIE du CIEL de KANT, roy. 8vo. sewn (SCARCE), 15s 1886

'Mon principal but était de montrer que la théorie de Laplace répond encore aujourd'hui le mieux possible aux conditions que l'on est en droit d'exiger d'une hypothèse cosmogonique'.-Préface. 1634 WORMS (Henry, F.R.A.S.) The EARTH and its MECHANISM; the various PROOFS of the EARTH'S ROTATION, with the Instruments used; with the THEORY of FOUCAULT'S PENDULUM and GYROSCOPE, numerous woodcuts and diagrams, 8vo. cl., 78 1862

1635

ANOTHER COPY, cl., with references by Lord Justice Stirling, F.R.S., 7s 6d Giving interesting and full accounts of the experiments on falling bodies made by Guglielmini, Benzenberg, and Ferdinand Reich, and proposing new modes of the suspension of the pendulum, modifications of the gyroscope, etc. etc., while the theoretical part contains the solution of intricate problems of analytieal mechanics.'-Preface.

1636 WRIGHT (Thomas Wallace, Union College), and John Fillmore HAYFORD, U.S. Coast and Geodetic Survey: The ADJUSTMENT of OBSERVATIONS by the METHOD of LEAST SQUARES, with Applications to Geodetic Work, 2nd Edition, with 26 diagrams, 8vo. cl., 8s (p. 12s 6d nett) New York, 1906

'Chapter IX contains an exceedingly important application of the method of least squares to the selection of methods of observation.'-Preface.

YERKES OBSERVATORY: PUBLICATIONS—v. No. 211.

V. PHYSICS.

1637 ABNEY (Sir William de Wiveleslie, R.E., F.R.S.) COLOUR VISION: Tyndall Lectures in 1894, with coloured frontispiece, and numerous diagrams, 8vo. cl. (o. p.), 7s 6d 1895

1639

1904

'Bringing into notice the latest results which had been obtained from physical experiments.'-Preface. 1638 ABRAHAM (Henri) RECUEIL d'EXPÉRIENCES ÉLÉMENTAIRES de PHYSIQUE, publié avec la Collaboration de nombreux Physiciens; with numerous woodcuts, 2 vols. 8vo. in 1, hf. calf, 6s 6d (p. F. 11 nett sewn) et Paul LANGEVIN, Les QUANTITÉS ÉLÉMENTAIRES d'ÉLECTRICITÉ : IONS, ÉLECTRONS, CORPUSCULES MÉMOIRES réunis et publiés par; with 3 plates and numerous textillustrations, thick vol. large roy: 8vo. in 2, buckram, uncut, t. e. g., £1. 2s 6d (p. F. 38.50 nett sewn) Société française de Physique, 1905 Containing all the important memoirs that went towards constituting the Electron Theory and the phenomena of Radioactivity, including those (all in French) by HENRI BECQUEREL, SIR WILLIAM CROOKES, PROF. and MME, CURIE, DRUDE, GOLDSTEIN, HERTZ, HITTORF, SIR JOSEPH LARMOR, LENARD, LORENTZ, PERRIN, PLÜCKER, POINCARÉ, RIGHI, SIR ERNEST RUTHERFORD, SIR J. J. THOMSON, and many others.

1640 AIRY (Sir George Biddell, P.R.S., Astronomer Royal) On SOUND and ATMOSPHERIC VIBRATIONS; with the Mathematical Elements of MUSIC, with 2 plates, post 8vo. cl., uncut (o. p.),

1641

5s

1868

TREATISE on MAGNETISM, with 74 woodcuts, post 8vo. cl. (o. p.), with auto. of Lord Justice Stirling, F.R.S., 7s 6d 1870 Largely mathematical. The author was the inventor of a new system of compensation as applied to the mariner's compass, and would have been unspeakably angered that the men of the mercantile marine should be murdered, like Captain Fryatt and the crew of the Belgian Prince', by people who in his time were thought to be a civilized nation. 1642 AUTOBIOGRAPHY of, edited by WILFRID AIRY, M.I.C.E., with fine steel portrait by Jeens, 8vo. cl., 4s (p. 12s) Univ. Press, Cambridge, 1896

v. CAMBRIDGE PHILOSOPHICAL SOCIETY, No. 28, EARTH'S CRUST (METEOROLOGY), post, MEMOIRS, No. 362, OPTICAL PAPERS, post, and SCIENTIFIC MEMOIRS, No. 394. 1643_ALDINI (Giovanni; Prof. Physics, Bologna; nephew of_Galvani) ACCOUNT of the late IMPROVEMENTS in GALVANISM, with a series of CURIOUS and INTERESTING EXPERIMENTS, with APPENDIX, containing the Author's Experiments on the Body of a Malefactor executed at Newgate, with 4 copperplates, 4to. boards, uncut (SCARCE), 12s 6d 1803

1644

ESSAI théorique et expérimental sur le GALVANISME, avec une Série d'Expériences, faites en Présence des Commissaires de l'Institut National de France, et en divers Amphithéatres anatomiques de Londres; with 10 fine COLOURED FOLDING PLATES, 4to. fine copy in contemporary tree-calf extra (SCARCE), £1. 5s

1804

The author was a nephew of GALVANI, and contributed largely towards popularising the latter's discoveries. He also was the first to propose the utilisation of the tides for mechanical purposes. The experiments on the malefactor (one Forster) in the first work were of a rather gruesome character; they constituted however the first experiments on the human body with the galvanic current.

1645 ALDOUS (John Clement Primrose; pr., Fellow of Jesus Coll., Cantab.; Chief Instructor, H.M.S. Britannia), ELEMENTARY COURSE of PHYSICS, edited by, with very numerous woodcuts, and coloured plate, thick post 8vo. cl., 3s 6d (p. 7s 6d) 1898, or 1900

1907

1646 [NEW EDITION, with Corrections], with numerous woodcuts, and coloured plate, thick post 8vo. cl., 4s (p. 7s 6d) CONTENTS:-Mechanics, Properties of Matter, Hydrostatics, Heat, by the EDITOR; Wave Motion, Sound, Light, by W. D. EGGAR; Magnetism, Electricity, by F. R. BARRELL.

1648 ALEMBERT (Jean le Rond d', de l'Institut; F.R.S.; Encyclopédiste) ESSAI d'une NOUVELLE THÉORIE de la RÉSISTANCE des FLUIDES; with 2 plates, sm. 4to. contemporary mottled calf gilt (fine copy); rare, 10s 6d

1649

1650

1651

1652

1752

Investigating the resistance met by a body moving in water (e.g. a ship). As the theoretical results were not satisfactory, Turgot ordered original experiments on the subject which are given in Nouvelles Expériences (q. v. infra).

TRAITÉ de DYNAMIQUE, dans lequel les Loix de l'Équilibre et du Mouvement des Corps sont réduites au plus petit Nombre possible, et démontrées d'une Manière nouvelle, et, où l'on donne un Principe général pour trouver le Movement de plusieurs Corps qui agissent les uns sur les autres d'une Manière quelconque, première édition; with 4 plates, sm. 4to. contemporary French mottled calf (rare), 12s 6d

1743

NOUVELLE ÉDITION, fort augmentée par l'Auteur; with 5 plates, 4to. contemporary hf. calf (RARE), 17s 6d

1758

BEST EDITION. In this he enunciates the principle known by his name, namely, that the 'internal forces of inertia' (that is, the forces which resist acceleration) must be equal and opposite to the forces which produce the acceleration. The application of this principle enables us to obtain the differential equations of motion of any rigid system.'W. W. R. Ball.

At end are Some further Reflexions on his Lunar Tables (pp. 13), with a separate pagination.

TRAITÉ de l'ÉQUILIBRE et du MOUVEMENT des FLUIDES, pour servir de Suite au Traité de Dynamique, nouvelle Édition, revûe et augmentée; with 10 plates, 4to. contemporary hf. calf (nice copy); rare, 12s 6d 1770 The author here applies his principle of equilibrium to fluids, which 'led to partial differential equations which he was unable to solve' (W. W. R. Ball). Marie Jean Antoine Nicolas Caritat, Marquis de CONDORCET, et Charles BOSSUT, S.J.: NOUVELLES EXPÉRIENCES sur la RÉSISTANCE des FLUIDES; with 5 folding plates, 8vo. French mottled calf, 78 6d 1777 1653 ALHAZENUS [vere ABU ALI ALHAZEN bin ALHAZEN] OPTICE THESAURI Libri VII, nunc primùm editi, ejusdem LIBER de CREPUSCULIS, et NUBIUM ASCENSIONIBUS; item Vitellonis Libri X, omnes instaurati, Figuris illustrati et aucti; adjectis etiam in Alhazenum Commentariis a FREDERICO RISNERO; with numerous woodcuts, folio, old limp vellum (slightly foxed as usual, otherwise a SOUND AND VERY LARGE COPY); very rare, with auto. of GIOVANNI ALFONSO BORELLI (1608-79), £4. 10s Basilea, 1572

'Including the earliest scientific account of atmospheric refraction. It also contains some ingenious geometry, amongst other things, a geometrical solution of the problem to find at what point of a concave mirror a ray from a given point must be incident so as to be reflected to another given point.'-W. W. R. Ball.

To the law of the equality of the angles in reflexion, which he learned from the Greeks, he added the law that both angles lie in the same plane. He made a study of spherical and parabolic mirrors, and is the first physicist to give a detailed description of the human eye.'-Prof. Cajori.

VITELLO'S work contains not only a summary of all that was known on optics to the ancients and to Alhazen, but also a number of original investigations. 'A work on optics less diffuse and more systematic than that of Al Hazen, on which it was based. Witelo explained the twinkling of stars as due to the motion of the air, and showed that the effect was intensified if the star was viewed through water in motion. He pointed out that the rainbow was not formed by reflexion alone, as was taught by Aristotle, but was due to both reflexion and refraction.'-Prof. Cajori. 1654 AMPÈRE (André Marie; de l'Institut) DESCRIPTION d'un APPAREIL ÉLECTRO-DYNAMIQUE, 2e Edition; with folding plate on copper, comprising 29 figures, post 8vo. (pp. 32), sewn (rare), 88 6d

1655

1656

1826

This work contains the author's invention of the astatic needle as applied to the galvanometer. THÉORIE des PHÉNOMÈNES ÉLECTRO-DYNAMIQUES, uniquement déduite de l'Expérience [avec ses Mémoires à l'Académie Royale des Sciences, 1820, '22,723 et '25], édition originale; with 2 folding plates on copper, 4to. hf. cl. neat (LARGE AND SOUND COPY); RARE, £1. 12s 6d Novembre, 1826 -MÊME OUVRAGE, avec MÉMOIRE sur l'ACTION MUTUELLE d'un CONDUCTEUR VOLTAÏQUE et d'un AIMANT (pp. 88); with 3 folding plates-2 vols. cr. 4to. in 1, hf. cl. (corner torn off one plate of the first work), £2. 28 1826-[Bruxelles, '27]

ORIGINAL EDITION OF THE AUTHOR'S MOST IMPORTANT WORK, which laid the foundation of electro-dynamics, and prepared the way for Faraday's discoveries. The author's name is immortalized in electrical science as the unit for the electric current. 'The experimental investigation by which Ampère established the laws of the mechanical action between electric currents is one of the most brilliant achievements in science '.-Prof. J. Clerk Maxwell.

1657 ANDERSON (Richard, F.C.S.) LIGHTNING CONDUCTORS: their History, Nature, and Mode of Application; 3rd [last] Edition, revised and enlarged, with numerous woodcuts, 8vo. cl. (o. p.), 7s 6d (p. 16s)

1885

Including a copious history from their invention by Benjamin Franklin to 1885, and a bibliography, 1628-1384 (pp. 49). 1658 ANDRADE (Jules, Univ. Rennes) LEÇONS de MÉCANIQUE PHYSIQUE; with diagrams, roy. 8vo. buckram, uncut, 6s (p. F. 10 nett sewn)

1898

1911

1659 Le MOUVEMENT: Mesures de l'Étendue et Mesures du Temps; with 46 illustrations, 8vo. cl., or, buckram, 3s (p. F. 6.60 nett) 1660_ANDREWS (Thomas, M.D., F.R.S., Prof. Chemistry, Queen's Coll., Belfast) SCIENTIFIC PAPERS, with Memoir by PETER GUTHRIE TAIT, F.R.S.E., and A. CRUM BROWN, F.R.S., with steel 1889 portrait, 6 plates, and woodcuts, 8vo. cl., 10s (p. 18s) Including the author's important papers which contain his discovery of the continuity of the liquid and gaseous states and of the critical temperature of gases, besides important researches (in conjunction with Prof. Tait) on ozone, and on the heat of combination. On the CONTINUITY of the GASEOUS and LIQUID STATES of MATTER (1876)—v. THERMODYNAMICS, post.

V. PHYSICS, continued :—

1662 ANGSTRÖM (Anders Jöns, Univ. Upsala; F.R.S.) RECHERCHES sur le SPECTRE NORMAL du SOLEIL; with frontispiece of a spectrometer: Atlas, contenant les Longueurs d'Onde des Raies Frauenhofériennes données en 1,000,000 de Millimètre ; with 6 double plates, 2 vols. large 4to. in 1, hf. morocco (SCARCE), £2. 5s 1663

1664

Upsal, 1868 TEXT ONLY, with frontispiece of spectrometer, large 4to. cl., 12s 6d Angström takes rank after Kirchoff as a subordinate founder, so to speak, of solar spectroscopy. His great map of the 'normal' solar spectrum [i.e. the one depending exclusively on wave-length] was published in 1868. Robert Thalén was his coadjutor in its execution, and the immense labour which it cost was amply repaid by its eminent and lasting usefulness.'-Miss Agnes M. Clerke.

et Tobias Robert THALEN; Univ. Upsala: RECHERCHES sur les SPECTRES des METALLOÏDES; with 2 folding plates, 4to. sewn, with numerous notes by Prof. A. S. Herschel, F.R.S. (scarce), 10s 6d

- v. MEMOIRS, No. 362.

ANNALEN der PHYSIK und CHEMIE-v. No. 6.
ANNALES de CHIMIE et de PHYSIQUE-v. Nos. 7-9.

ibidem, 1875

1665 ANTOMARI (Xavier) LEÇONS de CINÉMATIQUE et de DYNAMIQUE, suivies de la Détermination des Centres de Gravité; with diagrams: LEÇONS de STATIQUE; with diagrams-2 vols. 8vo. in 1, hf. black morocco neat, cl. sides (nice copy), 4s 6d 1902-1897

1667

1666 APPELL (Paul Emile, de l'Institut) COURS de MÉCANIQUE, 3e [dernière] Edition, entièrement refondue; with 191 illustrations, 8vo. hf. black morocco neat, cl. sides, t. e. g. (as good as new), 8s (p F. 13.20 nett sewn) 1912 LEÇONS sur l'ATTRACTION et la FONCTION POTENTIELLE, rédigées par M. CHARLIAT ; with 24 diagrams, roy. 8vo. sewn (scarce), 4s 1892 1668 et T. DAUTHEVILLE, Univ. Montpellier: PRÉCIS de MÉCANIQUE RATIONNELLE : Introduction à l'Étude de la Physique et de la Mécanique appliquée; with 222 diagrams, roy. 8vo. (pp. 729), handsomely bound in hf. pigskin, cl. sides, uncut, t. e. g., 16s (p. F. 27.50 nett sewn) 1910 1669 ARCHIMEDES: DE IIS QUÆ VEHUNTUR IN AQUA Libri II, à FREDERICO COMMANDINO in pristinum Nitorem restituti, et COMMENTARIIS illustrati; with diagrams, sm. 4to. sewn (LARGE AND FINE COPY); RARE, £1. ls Bononiæ, Alex. Benacius, 1565 'Jusqu'à présent la meilleure édition.'-Montucla. 'Ses traductions des mathématiciens anciens ont contribué aux progrès de cette science, et sont la source où les traducteurs et commentateurs postérieurs ont presque tous puisé.’— Biogr. Gén. A copy of this work, inferior in condition to the above, fetched £1. 16s at auction seven years ago.

1670

De INSIDENTIBUS AQUÆ Libri II [edente NICOLAO TARTALEA]; with printer's device on title, and numerous diagrams, 2 vols. sm. 4to. in 1, boards (blank side margin of one l. cut off, otherwise a sound and large copy); VERY RARE, with auto. of the late Dr. W. H. Besant, F.R.S., £1. Venetiis, Curtius Trojanus, 1565 Both the above works are Latin translations, by different editors, of IIepi Tv údarı ¿pioтaμévwv. 'Cet ouvrage, incomplet en grec, a été publié par Tartaglia sur un MS. latin. On y trouve une bonne théorie des corps flottants, fondée sur la pression égale d'un fluide.'-Biogr. Gén.

A copy fetched £1. 10s at auction in 1910. 1671 ARISTOXENUS Musicus: HARMONICORUM ELEMENTORUM Libri III. Cl. Ptolemæi HARMONICORUM, seu de Musica, Libri III. Aristotelis de OBJECTO AUDITUs Fragmentum, ex Porphyrii Commentariis. [Porphyrii de X Praedicamentis Liber.] Omnia nunc primum latine conscripta et edita ab ANT. GOGAVINO Graviensi, editio princeps; with printer's device on title and last l., and diagrams, 4to. (? LARGE PAPER) ; old limp vellum (VERY FINE COPY); rare, £2. 10s Venetiis, Vinc. Valgrisius, 1562

A very handsomely printed edition, which has now become very rare.

'Ouvrage important pour la connaissance de la musique des Grecs, et le plus ancien traité que nous ayons sur cet objet. La doctrine musicale d'Aristoxène, opposée à celle de Pythagore, a fait époque dans l'antiquité. Rejetant les calculs mathématiques de celui-ci, il n'admettait pour juge que l'oreille, opinion qui divisa la Grèce en deux sectes musicales: celle des pythagoriens, appelés canonici, et celle des aristoxéniens, appelés harmonici.'-Biogr. Gén. 1672 ARMSTRONG (William George first Lord, F.R.S.) ELECTRIC MOVEMENT in AIR and WATER, with Theoretical Inferences; 2nd Edition with Supplement, continuing his Experiments, with an Extension made in Concert with HENRY STROUD, with numerous fine plates (many COLOURED) of spark phenomena, 2 vols. folio in 1, cl. gilt (SCARCE), £1. 10s

1899

Lord Armstrong's immense practical achievements have overlain his reputation as a scientific investigator. In later life his happiest hours, when not employed in planting or building, were devoted to electrical research in his laboratory at Cragside. Among his early experiments with his hydro-electric machine he had shown that a cotton filament in two adjacent glasses travels towards the positive electrode in one, while an encircling tube of water moves towards the negative electrode in the other. This was the starting-point of his subsequent researches into the nature of the electric discharge. In 1897 he published a beautifully illustrated volume [supra] on Electric Movement in Air and Waler,' in which he discussed the most remarkable series of figures ever obtained by electric discharge over photographic plates'.H. P. Gurney, pr., D.C.L.

1673 ATWOOD (George, F.R.S., Fellow of Trinity) TREATISE on the RECTILINEAR MOTION and ROTATION OF BODIES, with Description of original Experiments on the Subject, 8 folding plates by BASIRE, roy. 8vo. contemporary tree-calf gilt (SCARCE), £1. 12s 6d Cambridge, 1784

1674

ANOTHER COPY, hf. calf gilt, with auto. of William Allen, F.R.S., £1. 10s

'In this work occurs (p. 298) the first description of the ingenious apparatus since so well known as Atwood's Machine', for exhibiting and verifying the accelerative action of gravity.'-D. N. B.

AVOGADRO (Amedeo) FISICA de' CORPI PONDERABILI (1837-41)—v. sub CHEMISTRY, post. 1675 BALL (Sir Robert Stawell, F.R.S.; Lowndean Prof., Cantab; Royal Astronomer, Ireland) The THEORY of SCREWS: a Study in the Dynamics of a Rigid Body, with frontispiece, 8vo. cl., 4s 6d (p. 10s 6d)

Dublin, 1876

V. PHYSICS, continued:

1677_BACON (Roger, O.M.; Doctor Mirabilis '); ROGERII BACCONIS Angli, Viri eminentissimi, PERSPECTIVA, in qua, quæ ab aliis fuse traduntur, succincte, nervose et ita pertractantur, ut omnium Intellectuí facile pateant, nunc primum in Lucem edita Opera et Studio JOHANNIS COMBACHII, Philosophiæ Professoris in Academia Marpurgensi, editio princeps; with numerous diagrams, sm. 4to. contemporary limp vellum (slightly browned as usual, but an UNUSUALLY SOUND AND CLEAN COPY); very rare, £3. 10s Francofurti, 1614

1678

This work includes the important Tractatus de Speculis, 'enunciating the laws of reflexion and in a general way of the refraction of light, and using them to give a rough explanation of the rainbow and of magnifying glasses' (W. W. Ř. Ball). It also contains the determination of the focus of the spherical mirror, and his first suggestion of spherical aberration, by stating that the reflected rays did not meet at one point, but in a series of points in the optical axis. The above work forms Part V of the Opus Majus.

OPUS IDEM, necnon SPECULA MATHEMATICA, in qua de SPECIERUM MULTIPLICATIONE, earundemque in inferioribus Virtute agitur Liber omnium Scientiarum studiosis apprime utilis, editus Opera et Studio JOHANNIS COMBACHII, editiones principes; with numerous diagrams— 2 vols. sm. 4to. in one, contemporary limp vellum (browned, but sound copies); very rare, £5. 5s

ibidem, 1614

The second work, which afterwards formed part IV of the Opus Majus, contains Roger Bacon's views on astronomy and physical geography. All the original editions of his writings are now of great rarity.

OPERA; and OPUS MAJUS-v. Nos. 232-3.

1679 BAIN (Alexander) ACCOUNT of some REMARKABLE APPLICATIONS of the ELECTRIC FLUID to the USEFUL ARTS; with a Vindication of his CLAIM to be FIRST INVENTOR of the ELECTROMAGNETIC PRINTING TELEGRAPH, and also of the ELECTRO-MAGNETIC CLOCK, by JOHN FINLAISON, Actuary of the National Debt Office, with 5 large folding plates, post 8vo. sewn, with inscr. to Earl Russell (scarce), 14s

1680

1843

'To the Right Honourable The Lord John Russell with the author's most respectful compliments.'-Inscr. on flyleaf. ANOTHER COPY; also: The PETITION of ALEXANDER BAIN AGAINST, and the Evidence before the Committee on, the ELECTRIC TELEGRAPH COMPANY BILL-2 vols. post 8vo. original paper cover, 17s 6d

The second piece includes 18 pp. of evidence by GENERAL SIR C. W. PASLEY.

1843-6 The inventor was a Caithnessshire man, and apparently no connexion of his contemporary namesake the Rector of Aberdeen University. 'He was one of the first to devise a method by which a number of clocks could be worked electrically from a standard time keeper He discovered independently the use of the earth circuit. Electric fire-alarms and sounding apparatus were also among his inventions. His most important invention was the chemical telegraph of 1843. This apparatus could be worked at a speed hitherto impossible, and its invention certainly entitles Bain to the credit of being the pioneer of modern high-speed telegraphy... Perhaps the most valuable part of the invention consisted in the use of strips of perforated paper for the transmission of the message. This contrivance was long after adopted by Wheatstone, and is in use in all the existing high-speed systems of telegraphy.'-D. N. B.

1681 BALIANI (Giovanni Battista) De MOTU NATURALI GRAVIUM SOLIDORUM; with vignette on title and numerous diagrams, sm. 4to. hf. bound (VERY LARGE AND FINE COPY); RARE, 178 6d

Genue, 1638 ORIGINAL EDITION of this curious work, in which the author attempts to ascribe to himself nearly all of Galileo's discoveries [v. Poggendorff's Geschichte der Physik, pp. 292-3]. An old autograph note on the last 1., dated Sept. 22, 1639, states that this was a presentation copy from the author.

1682 BALY (Edward Cecil Cyril, F.R.S., Prof. Inorganic Chemistry, Liverpool) SPECTROSCOPY, with 163 illustrations, including 5 folding plates, post 8vo. cl. (cover damp stained), 6s (p. 10s 6d nett) 1905 1683 ANOTHER COPY, cl. (fresh copy), 7s 'Presenting the subject from the practical side.'-Preface.

1684 BARLOW (Peter, F.R.S., Royal Military Academy) ESSAY on MAGNETIC ATTRACTION, and on the LAWS of TERRESTRIAL and ELECTRO-MAGNETISM; 2nd Edition, much enlarged, with 6 plates by Lowry, 8vo. hf. calf (scarce), 10s

1823

1685 ANOTHER COPY, with APPENDIX, containing the EXPERIMENTS made on SHIP BOARD from Lat. 61° S. to Lat. 80° N., with 6 plates, 8vo. cl., uncut (fresh copy), 14s

1824 'Giving the details of his experiments to devise a remedy for the large deviations of the compass due to the increasing quantities of iron used in the construction and fittings of ships, and describing a simple method of correcting ships' compasses by fixing a small iron plate in such a position as to compensate all other attractions. In the second edition

he succeeded in connecting the whole of his experimental results by a mathematical theory based on a few simple assumptions.'-D. N. B. The author was moreover the first to notice the fact that the strength of the electric current is the same in all places of the conduit-a discovery which enabled Ohm to formulate his Law.

v. SCIENTIFIC MEMOIRS, No. 394.

1686 BARROW (Isaac, D.D., F.R.S.; Master of Trinity; tutor of Sir Isaac Newton) LECTIONES XVIII, inquibus OPTICORUM PHÆNOMENON genuine Rationes investigantur, ac exponuntur : LECTIONES GEOMETRICA: in quibus (praesertim) generalia CURVARUM LINEARUM SYMPTOMATA declarantur -2 vols. sm. 4to. in 1, with copperplates; contemporary calf, rebacked (LARGE AND SOUND COPY); RARE, £1. 15s Londini, 1669-70

FIRST EDITIONS of the author's two chief mathematical works. In the Optical Lectures many problems connected with the reflexion and refraction of light are treated with ingenuity. The geometrical focus of a point seen by reflexion or refraction is defined; and it is explained that the image of an object is the locus of the geometrical foci of every point on it. Barrow also worked out a few of the easier properties of thin lenses; and considerably simplified the Cartesian explanation of the rainbow. The geometrical lectures contain some new ways of determining the areas and tangents of curves. The latter is solved by a rule exactly analogous to the procedure of the differential calculus, except that a separate determination of what is really a differential coefficient has to made for every curve to which it was applied.'W. W. R. Ball.

According to the preface NEWTON revised and corrected the work and added matter of his own. BARTON (Benjamin Smith, M.D.)—v. AMERICAN PHILOSOPHICAL SOCIETY, No. 3. 1687 BARTON (Edwin Henry, Prof. Experimental Physics, Nottingham) TEXT-BOOK on SOUND, with 112 illustrations, large cr. 8vo. cl., t. e. g., 6s 6d (p. 10s nett)

'The various typical musical instruments are discussed more fully than usual.'-Preface.

1908