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" ... must be at least many thousands. Multitudes, indeed, must escape all observation, by reason of their paths traversing only that part of the heavens which is above the horizon in the day-time. "
A New System of Practical Astronomy: Made Plain and Easy to Those who Have ... - Page 40
de Thomas Spofford - 1835 - 72 pages
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Astronomy

Sir John Frederick William Herschel - 1833 - 444 pages
...easily supposed that their actual number must be at least many thousands. Multitudes, indeed, must escape all observation, by reason of their paths traversing...horizon in the daytime. Comets so circumstanced can only become visible by the rare coincidence of a total eclipse of the sun, — a coincidence which happened,...
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Astronomy

sir John Frederick W. Herschel (1st bart.) - 1833 - 500 pages
...easily supposed that their actual number must be at least many thousands. Multitudes, indeed, must escape all observation, by reason of their paths traversing...horizon in the daytime. Comets so circumstanced can only become visible by the rare coincidence of a total eclipse of the sun, — acoincidencewhich happened,...
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An Elementary Treatise on Astronomy: Adapted to the Present Improved State ...

John Farrar - 1834 - 504 pages
...easily supposed that then- actual number must be at least many thousands. Multitudes, indeed, must escape all observation, by reason of their paths traversing...horizon in the daytime. Comets so circumstanced can only become visible by the rare coincidence of a total eclipse of the sun, a coincidence which happened,...
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The Monthly Review, Volume 3

1835 - 642 pages
...previous to the discovery of the telescope; and that many are not seen on account of their traversing that part of the heavens which is above the horizon in the day. time, although it has sometimes happened tlmt they have been sufficiently bright to be seen in...
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The Earth: Its Physical Condition and Most Remarkable Phenomena

William Mullinger Higgins - 1836 - 514 pages
...previous to the discovery of the telescope ; and that many are not seen on account of their traversing that part of the heavens which is above the horizon in the daytime, although it has sometimes happened that they have been sufficiently bright to be seen in spite of the...
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The Family Library (Harper)., Volume 78

1836 - 422 pages
...previous to the discovery of the telescope ; and that many are not seen on account of their traversing that part of the heavens which is above the horizon in the daytime, although it has sometimes happened that they have been sufficiently bright to be seen in spite of the...
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A Treatise on Astronomy: Illustrated with Maps and Plates

Mrs. L. H. Tyler - 1837 - 302 pages
...easily supposed that their actual number must be at least many thousands. Multitudes, indeed, must escape all observation by reason of their paths traversing...of the heavens, which is above the horizon in the day time. Comets so circumstanced, can only become visible by the rare coincidence of a total eclipse...
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The Geography of the Heavens, and Class Book of Astronomy: Accompanied by a ...

Elijah Hinsdale Burritt - 1838 - 350 pages
...of one or two. And since multitudes of them must escape observation* by reason of their traversing that part of the heavens which is above the horizon in the day time, their whole number is probably many thousands. Comets so circumstanced, can only become visible...
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A sketch of the the life of the rev. John Brown, sometime minister ... in ...

Thomas Lockerby - 1839 - 566 pages
...easily supposed that their actual number must be at least many thousands. Multitudes, indeed, must escape all observation, by reason of their paths traversing...part of the heavens which is above the horizon in the day time. Comets so circumstanced can only become visible by the rare coincidence of a total eclipse...
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The Wesleyan methodist association magazine, Volume 9

1846 - 604 pages
...been recorded ; and it should be remembered that many are invisible on account of their traversing that part of the heavens which is above the horizon in the day time. Almost every year we have the account of one or more comets seen, and it sometimes happens...
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