Studies in the Theory of Descent, Volume I (Registro nro. 88686)
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| fixed length control field | 02526cam a22003973u 4500 |
| 001 - CONTROL NUMBER | |
| control field | 47847 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | UtSlPG |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260610134111.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS | |
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| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION | |
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| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 260607r2015||||utu|||||o|||||||||||||| d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | UtSlPG |
| 041 #7 - LANGUAGE CODE | |
| Language code of text/sound track or separate title | en |
| Source of code | iso639-1 |
| 050 #4 - LIBRARY OF CONGRESS CALL NUMBER | |
| Classification number | QH |
| -- | QL |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Weismann, August, |
| Dates associated with a name | 1834-1914 |
| 245 10 - TITLE STATEMENT | |
| Title | Studies in the Theory of Descent, Volume I |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
| Place of production, publication, distribution, manufacture | Salt Lake City, UT : |
| Name of producer, publisher, distributor, manufacturer | Project Gutenberg, |
| Date of production, publication, distribution, manufacture, or copyright notice | 2015 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 1 online resource : |
| Other physical details | multiple file formats |
| 336 ## - CONTENT TYPE | |
| Content type term | text |
| Content type code | txt |
| Source | rdacontent |
| 337 ## - MEDIA TYPE | |
| Media type term | computer |
| Media type code | c |
| Source | rdamedia |
| 338 ## - CARRIER TYPE | |
| Carrier type term | online resource |
| Carrier type code | cr |
| Source | rdacarrier |
| 500 ## - GENERAL NOTE | |
| General note | Release date is 2015-01-02 |
| 508 ## - CREATION/PRODUCTION CREDITS NOTE | |
| Creation/production credits note | Produced by Marilynda Fraser-Cunliffe, Charlie Howard, and<br/>the Online Distributed Proofreading Team at<br/>http://www.pgdp.net (This file was produced from images<br/>generously made available by The Internet Archive) |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | "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.) |
| 534 ## - ORIGINAL VERSION NOTE | |
| Note about original | Original publication data not identified |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Insects |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Heredity |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Zoology |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Butterflies |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Lepidoptera |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Insects -- Evolution |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Mechanism (Philosophy) |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Darwin, Charles, |
| Dates associated with a name | 1809-1882 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Meldola, Raphael, |
| Dates associated with a name | 1849-1915 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://www.gutenberg.org/ebooks/47847">https://www.gutenberg.org/ebooks/47847</a> |
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