Studies in the Theory of Descent, Volume I by August Weismann
QR code
"Studies in the Theory of Descent, Volume I" by August Weismann is a scientific publication written in the late 19th century. This work extensively explores the principles of evolution, specifically focusing on the origins and significance of seasonal dimorphism in butterflies and how variations in external conditions influence these phenomena. The content provides insights into Weismann's theories on inheritance, variation, and the impact of climate on species adaptation. The opening of this
volume introduces the concept of seasonal dimorphism, exemplified by the butterfly species "Araschnia Levana", which appears in distinct winter and summer forms. Weismann discusses his experimental findings that suggest these variations are not merely superficial but are influenced by direct external conditions such as temperature and the duration of the developmental stages. He details a series of experiments and observations aimed at understanding whether these differences arise from adaptation via natural selection or from underlying biological processes, ultimately leading toward a deeper investigation of the mechanisms behind evolutionary change. (This is an automatically generated summary.)
Download for free
For your e-reader or reading app — Kindle, Kobo, Apple Books, Calibre etc.
Kindle → Use Send-to-Kindle
Kobo, Nook etc. → Transfer via USB
Phone, tablet or computer → Open in a reading app
Other formats & older devices
There may be more files related to this item.
About this eBook
| Author | Weismann, August, 1834-1914 |
|---|---|
| Author of introduction, etc. | Darwin, Charles, 1809-1882 |
| Translator | Meldola, Raphael, 1849-1915 |
| Title | Studies in the Theory of Descent, Volume I |
| Credits |
Produced by Marilynda Fraser-Cunliffe, Charlie Howard, and the Online Distributed Proofreading Team at www.pgdp.net (This file was produced from images generously made available by The Internet Archive) |
| Reading Level | Reading ease score: 56.1 (10th to 12th grade). Somewhat difficult to read. |
| 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. | 47847 |
| Release Date | Jan 2, 2015 |
| Last Update | Oct 24, 2024 |
| Copyright | Public domain in the USA. |
| Downloads | 682 downloads in the last 30 days. |
Project Gutenberg eBooks are always free!