Proceedings Of The Boston Society Of Natural History Vol 7

Author : Boston Society Of Natural History
Publisher : Hardpress Publishing
ISBN 13 : 9781314277128
Total Pages : 464 pages
Book Rating : 4.2X/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History written by Boston Society Of Natural History and published by Hardpress Publishing. This book was released on 2013-06 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Author : Boston Society of Natural History
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.53/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History written by Boston Society of Natural History and published by . This book was released on 1844 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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ISBN 13 : 9781332306244
Total Pages : 456 pages
Book Rating : 4.41/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History, Vol. 7 written by and published by . This book was released on 2015-08-05 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Proceedings of the Boston Society of Natural History, Vol. 7: 1859 to 1861 A number of these chrysalids were kept, in order to ascertain if they would undergo metamorphosis, and, if so, whether the perfect insects would be healthy and vigorous; some were kept two months, at the end of which time they were accidentally lost, undergoing no change, remaining however in a perfect state of preservation and full of pulp; a number of small flies, apparently not ichneumons, which gained access to them, died almost immediately, as was supposed from having fed upon them - the empty shells of other chrysalids found about the room showed that some had been metamorphosed, as none but the arsenically-fed larvae had been admitted to the apartment. Experiments made to determine how large a quantity of arsenic might be contained in flesh without rendering it unfit for the food of these larvae, were not very satisfactory, from the hardening of the tissue by solutions of this substance preventing the deposition of the eggs; eggs developed in such tissue bring forth living worms, which in his experiments died in six or eight hours. The adult flies perished in great numbers, while depositing the eggs upon the poisoned flesh. Jaeger (quoted by Orfila, Toxicologic I. 379) alludes to the fact that larvae of flies live a little longer than the perfect insects, when arsenious acid is introduced into the digestive organs or applied to their external soft parts. Under favorable moist conditions, the larvae lived three or four days, and were evidently nearly ready to pass into the chrysalid state. Experiments with arsenic acid, used however in too concentrated a state, also showed that there is a limit to the amount of arsenic which these larvae can support. He was inclined to believe that they can eat with impunity any flesh into which arsenic has been carried by vital processes, from the fact of their being found upon the arsenicated liver, an organ capable of absorbing a very large quantity of this poison; anatomical preparations, injected thoroughly with arsenic acid, have been found completely riddled and alive with larvae. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."

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ISBN 13 :
Total Pages : 674 pages
Book Rating : 4.28/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History written by and published by . This book was released on 1904 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Boston Society Of Natural History
Publisher : Hardpress Publishing
ISBN 13 : 9781314749182
Total Pages : 266 pages
Book Rating : 4.88/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History.. written by Boston Society Of Natural History and published by Hardpress Publishing. This book was released on 2013-12 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Author : Boston Society Of Natural History
Publisher : Hardpress Publishing
ISBN 13 : 9781314277074
Total Pages : 286 pages
Book Rating : 4.73/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History written by Boston Society Of Natural History and published by Hardpress Publishing. This book was released on 2013-06 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Author : Boston Society Of Natural History
Publisher : Hardpress Publishing
ISBN 13 : 9781314277135
Total Pages : 336 pages
Book Rating : 4.38/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History written by Boston Society Of Natural History and published by Hardpress Publishing. This book was released on 2013-06 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Author : Boston Society Of Natural History
Publisher : Hardpress Publishing
ISBN 13 : 9781314682793
Total Pages : 430 pages
Book Rating : 4.92/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History.. written by Boston Society Of Natural History and published by Hardpress Publishing. This book was released on 2013-12 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Author : Boston Society Of Natural History
Publisher : Hardpress Publishing
ISBN 13 : 9781314277180
Total Pages : 412 pages
Book Rating : 4.89/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History written by Boston Society Of Natural History and published by Hardpress Publishing. This book was released on 2013-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Author : Boston Society of Natural History
Publisher :
ISBN 13 :
Total Pages : 558 pages
Book Rating : 4.80/5 ( download)

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Download or read book Proceedings of the Boston Society of Natural History written by Boston Society of Natural History and published by . This book was released on 1935 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: