Career
He was the director of the Edinburgh City Observatory from 1889 until his death. He is buried in Warriston Cemetery in the upper section, on the north side of the main east-west pathological
(This historic book may have numerous typos and missing te...)
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 Excerpt: ...the nucleus, like waves receding from the place where a stone has been dropped into some still water. These envelopes, as they have been termed, are doubtless spherical segments of matter, slightly more dense than the vapour forming the other parts of the coma--(see the heads of the comets of 1861 and 1882 in Plate 16). Even these densest portions, however, consist of some very rare vapour, as is proved by the fact that faint stars can occasionally be seen shining through them. In the direction exactly opposite from the sun the coma generally streams past the nucleus, and forms the commencement of the tail. THE TAILS OF COMETS. The tail is certainly the most wonderful portion of a comet--the part which, from its strange appearance and gigantic dimensions occasionally attained, was, in superstitious ages, well fitted to produce terror and awe. In telescopic comets the tail, as might be expected, is generally small, and sometimes altogether wanting, in which case the comet is simply a mass of vapour without any distinct nucleus. In travelling towards the sun, the tail is always stretching behind the nucleus, and before it when the comet is travelling away from the centre of attraction. This was first noticed to be the case by Appian, from observations of the comet which THE APPARENT AND ACTUAL LENGTHS OF THE TAILS OF COMETS. appeared in 1531, as he found that independent of the position the comet occupied in its orbit, the tail was always pointing away from the sun, and was simply a prolongation of the radius vector, in every instance the convex side being nearest to that line. In many instances the tails of comets extend to an enormous distance from the nucleus. The tail of the comet of Newton, for example, was no less than 100 millions of miles in length, a...
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(This book was digitized and reprinted from the collection...)
This book was digitized and reprinted from the collections of the University of California Libraries. It was produced from digital images created through the libraries’ mass digitization efforts. The digital images were cleaned and prepared for printing through automated processes. Despite the cleaning process, occasional flaws may still be present that were part of the original work itself, or introduced during digitization. This book and hundreds of thousands of others can be found online in the HathiTrust Digital Library at www.hathitrust.org.
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(This book was originally published prior to 1923, and rep...)
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
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(Excerpt from The Constellations and How to Find Them; 13 ...)
Excerpt from The Constellations and How to Find Them; 13 Maps, Showing the Position of the Constellations in the Sky During Each Month of Any Year Fig. 1. Southern Sky ago the present time, when science and religion have so enlightened the world, there are those who, though they do not believe in the influences of the stars, or astrology, believe in planetology, or in the power that planets and comets are supposed to have over famines, pestilences, droughts, earth quakes, and such like, which is just as ridiculous as the ancient system of astrology. It is, however, not my purpose at present to discuss the difference between ancient and modern astrology, but rather to shew how a knowledge of the principal stars and constellations may be easily attained, and to point out anything that may be of interest in connection with them. To any one who has an interest in the study of 'the starry heavens, there is no occupation more agreeable than to observe the sky on a clear night, and watch the varied positions of the constellations from season to season; noting as the months advance familiar stars disappearing in the west as new groups appear in the east, till after the lapse of a year the heavens will again represent the same appearances. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
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(This book was originally published prior to 1923, and rep...)
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
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He was the director of the Edinburgh City Observatory from 1889 until his death. He is buried in Warriston Cemetery in the upper section, on the north side of the main east-west pathological
(This book was originally published prior to 1923, and rep...)
(This book was originally published prior to 1923, and rep...)
(Excerpt from The Constellations and How to Find Them; 13 ...)
(This book was digitized and reprinted from the collection...)
(This historic book may have numerous typos and missing te...)
(astronomy)