1850, Published at 15s.

CONTENTS:-R. Mallet, First Report on the Facts of Earthquake Phænomena;-Rev. Prof. Powell, on Observations of Luminous Meteors ;-Dr. T. Williams, on the Structure and History of the British Annelida;-T. C. Hunt, Results of Meteorological Observations taken at St. Michael's from the 1st of January, 1840 to the 31st of December, 1849;-R. Hunt on the present State of our Knowledge of the Chemical Action of the Solar Radiations ;-Tenth Report of Committee on Experiments on the Growth and Vitality of Seeds;-Major-Gen. Briggs, Report on the Aboriginal Tribes of India ;—F. Ronalds, Report concerning the Observatory of the British Association at Kew ;-E. Forbes, Report on the Investigation of British Marine Zoology by means of the Dredge;-R. MacAndrew, Notes on the Distribution and Range in depth of Mollusca and other Marine Animals, observed on the coasts of Spain, Portugal, Barbary, Malta, and Southern Italy in 1849;-Prof. Allman, on the Present State of our Knowledge of the Freshwater Polyzoa;-Registration of the Periodical Phænomena of Plants and Animals ;-Suggestions to Astronomers for the Observation of the Total Eclipse of the Sun on July 28, 1851.

Together with the Transactions of the Sections, Sir David Brewster's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE TWENTY-FIRST MEETING, at Ipswich, 1851, Published at 16s. 6d.

CONTENTS:-Rev. Prof. Powell, on Observations of Luminous Meteors;-Eleventh Report of Committee on Experiments on the Growth and Vitality of Seeds;-Dr. J. Drew, on the Climate of Southampton;-Dr. R. A. Smith, on the Air and Water of Towns: Action of Porous Strata, Water and Organic Matter;-Report of the Committee appointed to consider the probable Effects in an Economical and Physical Point of View of the Destruction of Tropical Forests;-A. Henfrey, on the Reproduction and supposed Existence of Sexual Organs in the Higher Cryptogamous Plants;-Dr. Daubeny, on the Nomenclature of Organic Compounds;-Rev. Dr. Donaldson, on two unsolved Problems in Indo-German Philology ;Dr. T. Williams, Report on the British Annelida;-R. Mallet, Second Report on the Facts of Earthquake Phænomena ;-Letter from Prof. Henry, to Col. Sabine, on the System of Meteorological Observations proposed to be established in the United States;-Col. Sabine, Report on the Kew Magnetographs;-J. Welsh, Report on the Performance of his three Magnetographs during the Experimental Trial at the Kew Observatory;-F. Ronalds, Report concerning the Observatory of the British Association at Kew, from September 12, 1850, to July 31, 1851;-Ordnance Survey of Scotland.

Together with the Transactions of the Sections, Professor Airy's Address, and Recommendations of the Association and its Committees.

PROCEEDINGS OF THE TWENTY-SECOND MEETING, at Belfast, 1852, Published at 15s.

CONTENTS:-R. Mallet, Third Report on the Facts of Earthquake Phænomena;-Twelfth Report of Committee on Experiments on the Growth and Vitality of Seeds;-Rev. Prof. Powell, Report on Observations of Luminous Meteors, 1851-52;-Dr. Gladstone, on the Influence of the Solar Radiations on the Vital Powers of Plants;—A Manual of Ethnological Inquiry;-Col. Sykes, Mean Temperature of the Day, and Monthly Fall of Rain, at 127 Stations under the Bengal Presidency ;~Prof. J. D. Forbes, on Experiments on the Laws of the Conduction of Heat ;-R. Hunt, on the Chemical Action of the Solar Radiations;-Dr. Hodges, on the Composition and Economy of the Flax Plant;-W. Thompson, on the Freshwater Fishes of Ulster ;-W. Thompson, Supplementary Report on the Fauna of Ireland ;-W. Wills, on the Meteorology of Birmingham;-J. Thomson, on the Vortex-Water- Wheel;-J. B. Lawes and Dr. Gilbert, on the Composition of Foods in relation to Respiration and the Feeding of Animals.

Together with the Transactions of the Sections, Colonel Sabine's Address, and Recommendations of the Association and its Committees.

Diagram of the Surface Temperature of the NAtlantic as derived from 13 passages

Explanation The lower zig zag line represents the lowest Temp.recorded in the several meridians traversed within the 13 transatlantic Passages. The middle uneven line, the mean Temp. of all the Observations within each 20 of long. the upper uneven line the highest temperatures observed. The dark straight line represents the mean surface temp. from 1400 observations. The portion shewn by the darker shading represents the range of temp. below the meridional averages the lighter shading that above the special means.