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Excerpt from The Microscope and Its Revelations, Vol. 2
II. The Second division, Heliozoa,' consists of the Rhizopods whose pseudopodia extend themselves as straight radiating rods, having little or no tendency to subdivide or ramif though they are still sufficiently soft and homogeneous (at least in t e lower types, to coalesce when they come into contact with each other. These have usually (probably always) a contractile vesicle as well as a nucleus; and the higher forms of them are characterized by the inclosure of peculiar yellow corpuscles (whose import is unknown) in the substance of their endosarc. By far the larger number Of this group also have Skeletons of Mineral matter, which are always siliceous; and these are sometimes perforated casings Of great regularity of form, as in the marine Poly c stina sometimes internal frameworks of marvellous symmetry, as in t e marine Radiolaria. These two groups, also, will be reserved for special notice (chap. XII.) the simple Heliozoa which are among the commonest inhabitants of fresh water, furnishing the best. Illustrations of the essential characters of the type. They seem for the most part to have but little locomotive power, capturing their prey by their extended pseudopodia.
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Paperback. Condition: New. Print on Demand. This book delves into the fascinating world of microscopic life, offering a detailed exploration of the intricate forms and functions of the tiniest creatures that populate our planet. Beginning with the simplest organisms, the Protozoa, the author meticulously guides the reader through the various types, from the single-celled Monerozoa to the more complex Rhizopoda, Heliozoa, and Lobosa. The book further examines fascinating testaceous forms like Gromia and Arcella, and discusses the intriguing coccoliths and coccospheres found on the deep-sea bottom. The author's historical perspective is evident in the reference to the work of earlier naturalists like Dujardin and Ehrenberg, placing this investigation within the broader context of scientific discovery. The book's thematic depth is evident in its discussion of the fundamental processes of life at the microscopic level, including locomotion, nutrition, reproduction, and even parasitism, as seen in the Gregarina. This exploration of the building blocks of life sheds light on the shared ancestry of all living beings, and the evolutionary journey that has led to the diverse forms of life we observe today. This book offers a unique insight into the hidden world of microscopic life, revealing a universe of complexity and beauty that exists just beyond the reach of the unaided eye. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781331952923_0
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The Microscope and Its Revelations, Vol 2 Classic Reprint
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