Through A Pocket Lens
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Through A Pocket Lens
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Author : Henry Scherren
language : en
Publisher:
Release Date : 1904
Through A Pocket Lens written by Henry Scherren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1904 with Microscopes categories.
Through A Pocket Lens
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Author : Henry Scherren
language : en
Publisher:
Release Date : 1897
Through A Pocket Lens written by Henry Scherren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1897 with Microscopes categories.
Through A Pocket Lens
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Author : Henry Scherren
language : en
Publisher: Rarebooksclub.com
Release Date : 2013-09
Through A Pocket Lens written by Henry Scherren and has been published by Rarebooksclub.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09 with categories.
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 edition. Excerpt: ...of extremely viscid silk, upon which the gummy secretion is distinctly visible, with the aid of a lens, in the form of closely approximated globules of amber-coloured glue. It is said that when the viscid lines are completed the spider cuts away the unadhesive lines, but this I have never observed 2.' My own observations lead me to believe that Dr. Butler is correct in his description. Though I have often watched, I have never seen a spider 'biting' away any part of its web, nor would the falces appear to be adapted for such an operation. They are piercing, not cutting, weapons. The spider may be watched at leisure, if put into a bottle of moderate size, the top of which should be covered with muslin or calico to prevent escape. Here it is fairly easy to bring the pocket lens into play, and to distinguish the different parts of the animal. The eyes, and their arrangement, should be particularly noticed. Blackwall, in support of the position that in making their webs spiders are guided by touch rather than sight, says, 'Various species, when confined in spacious glass jars placed in situations absolutely impervious to light, construct nets which do not exhibit the slightest irregularity of plan. or defect of structure I-.' FlG.5i.--AnchorageofWeb. specimens have always been kept in the light, and in small bottles rather than spacious jars, but I have never seen spiders attempt to make a geometrical web under such conditions. A bottle which for some months served as a prison-house for a Garden Spider now stands on my writing-table. Its sides are marked by hundreds of 'anchorages '--but the threads cross and recross, forming in some parts a kind of sheet, and in others a tangled mass. Some of these threads...
Through A Pocket Lens
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Author : HENRY SCHERREN
language : en
Publisher: BEYOND BOOKS HUB
Release Date : 1897-01-01
Through A Pocket Lens written by HENRY SCHERREN and has been published by BEYOND BOOKS HUB this book supported file pdf, txt, epub, kindle and other format this book has been release on 1897-01-01 with Fiction categories.
The object of this little book is to show how much may be seen with an ordinary pocket lens, and with a simple microscope; and, as far as possible, to dispel the idea, far too common, especially among beginners, that no real work can be done unless one has a compound microscope, with a large battery of lenses and an array of ‘accessories.’ It would be easy to multiply quotations, from high authorities, in support of the proposition implied in the foregoing paragraph. Two only must suffice. In a recent review of a very good book dealing with Butterflies and Moths (Natural Science, vol. vi. p. 293), the following passage occurs: ‘The only suggestion we should like to make is that a compound microscope is unnecessary for any of the details that the author mentions. A first-rate platyscopic hand lens is much more convenient and the young naturalist should train himself thoroughly in the use of it. There is no more common error than the undue use of the higher powers of a microscope. Except for the intimate details of histology, a low power or a hand lens is much more easy to use, and its employment gives a much better idea of the structure...
Nature Notes
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Author :
language : en
Publisher:
Release Date : 1897
Nature Notes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1897 with Natural history categories.
Through A Microscope Something Of The Science Together With Many Curious Observations Indoor And Out And Directions For A Home Made Microscope
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Author : Frederick Leroy Sargent, Mary Treat, Samuel R. Wells
language : en
Publisher: Library of Alexandria
Release Date : 2011-01-01
Through A Microscope Something Of The Science Together With Many Curious Observations Indoor And Out And Directions For A Home Made Microscope written by Frederick Leroy Sargent, Mary Treat, Samuel R. Wells and has been published by Library of Alexandria this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-01 with Fiction categories.
Loftus S Inland Revenue Officers Manual
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Author : William Harris Johnston
language : en
Publisher:
Release Date : 1865
Loftus S Inland Revenue Officers Manual written by William Harris Johnston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1865 with categories.
Through A Microscope
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Author : Frederick Leroy Sargent
language : en
Publisher: DigiCat
Release Date : 2022-08-01
Through A Microscope written by Frederick Leroy Sargent and has been published by DigiCat this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-08-01 with History categories.
DigiCat Publishing presents to you this special edition of "Through a Microscope" (Something of the Science, Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope) by Frederick Leroy Sargent, Mary Treat, Samuel Wells. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.
Through A Microscope
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Author : Mary Treat
language : en
Publisher: Good Press
Release Date : 2019-11-26
Through A Microscope written by Mary Treat and has been published by Good Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-26 with History categories.
"Through a Microscope" by Mary Treat, Frederick Leroy Sargent, Samuel Wells. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.
Routledge S Every Boy S Annual
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Author : Edmund Routledge
language : en
Publisher:
Release Date : 1865
Routledge S Every Boy S Annual written by Edmund Routledge and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1865 with categories.