Excerpt from Quarterly Journal of Microscopical Science, 1902, Vol. 45: New Series, With Lithographic Plates and Engravings on Wood
The investigation of a holoblastic egg 7 mm. In diameter and packed with yolk involves great technical di iculties, as the whole of each egg has to be converted into thin sections. The full extent of these di iculties will only be appreciated by embryologists who have essayed a similar task. In Order to help future workers I devote a few paragraphs to a general account of methods. Then follows an account of the phenomena observed, in which, as in my first paper, I reserve remarks of a general nature embodying views rather than facts for a concluding section, so that any reader may Obtain the facts, which are naturally of greater importance, with a minimum of trouble.
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Paperback. Zustand: New. Print on Demand. This book delves into the embryological development of the prehistoric fish Lepidosiren, commonly known as the lungfish. The author utilizes various microscopes and staining techniques to examine fish eggs and embryos, reconstructing the developmental stages of the species. One of the most significant findings is that the lungfish gastrulation process, involving the formation of the archenteron (primitive gut), occurs mainly through a process of invagination, challenging the previously held belief that splitting is the primary mechanism in this species. The author also meticulously describes the formation of the notochord, mesoderm, and nervous system in Lepidosiren embryos. This detailed analysis provides valuable insights into the early development of lungfish and contributes to our understanding of vertebrate evolution. 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. Bestandsnummer des Verkäufers 9781334415340_0
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781334415340
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781334415340
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Zustand: Hervorragend. Zustand: Hervorragend | Seiten: 814 | Sprache: Englisch | Produktart: Bücher | Keine Beschreibung verfügbar. Bestandsnummer des Verkäufers 28158469/1
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