Studies in the Theory of Descent (Volumes 1 and 2) by August Weismann

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Author Weismann, August, 1834-1914
Author of introduction, etc. Darwin, Charles, 1809-1882
Translator Meldola, Raphael, 1849-1915
Uniform Title Studien zur Descendenz-Theorie. English
Title Studies in the Theory of Descent (Volumes 1 and 2)
Credits Produced by Marilynda Fraser-Cunliffe, Charlie Howard, and
the Online Distributed Proofreading Team at
http://www.pgdp.net (This file was produced from images
generously made available by The Internet Archive)
Summary "Studies in the Theory of Descent" by August Weismann is a scientific publication written in the late 19th century. This work delves into the principles of evolution, focusing significantly on the mechanisms of inheritance and variability in species, particularly in insects. It aims to investigate the interactions between environmental factors and biological development, thereby exploring the complexities and implications of evolutionary theory. At the start of this work, Weismann introduces the concept of seasonal dimorphism in butterflies, where different forms of a species appear at different times of the year, as exemplified by the species "Araschnia Levana". He describes experiments that reveal how environmental influences, such as temperature, can affect the development and characteristics of butterflies, offering insights into the origin of their markings. Weismann challenges existing views on adaptation and establishes a basis for further investigation into how species may evolve and adapt over time, highlighting the significance of both inherited traits and external conditions in shaping biological forms. (This is an automatically generated summary.)
Language English
LoC Class QH: Science: Natural history
LoC Class QL: Science: Zoology
Subject Insects
Subject Heredity
Subject Zoology
Subject Butterflies
Subject Lepidoptera
Subject Insects -- Evolution
Subject Mechanism (Philosophy)
Category Text
EBook-No. 47849
Release Date
Copyright Status Public domain in the USA.
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