Archives containing the RDF files for *all* our books can be downloaded at https://www.gutenberg.org/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog Project Gutenberg 2005-01-01 Public domain in the USA. 113 Vries, Hugo de 1848 1935 De Vries, Hugo DeVries, Hugo MacDougal, Daniel Trembly 1865 1958 MacDougal, D. T. (Daniel Trembly) Species and Varieties, Their Origin by Mutation Reading ease score: 57.2 (10th to 12th grade). Somewhat difficult to read. Produced by Dave Gowan "Species and Varieties, Their Origin by Mutation" by Hugo de Vries is a scientific publication written in the early 20th century. The book presents lectures focused on the theory of mutation as a key mechanism for the origin of species and varieties, challenging the slow change model proposed by Darwin and others. De Vries argues for sudden mutations that generate new species, suggesting that the processes underlying species formation can be experimentally investigated, particularly in agricultural and horticultural contexts. The opening of the work introduces the premise of mutation theory, highlighting how it diverges from traditional evolutionary thought. De Vries outlines his intention to demonstrate that new species and varieties arise suddenly, rather than through gradual changes, and he emphasizes the importance of empirical research and controlled experiments in this context. He also critiques the limitations of existing theories of descent, particularly Darwin's reliance on gradualism, by insisting that the experimental observation of mutative processes offers a more fruitful approach for understanding evolutionary biology. The author sets the stage for further explorations into specific examples, methodologies, and implications of his findings throughout the rest of the lectures. (This is an automatically generated summary.) en Evolution (Biology) Plants -- Variation Plant mutation Plant hybridization Plants -- Evolution QH QK Text Biology Browsing: Science - General Browsing: Science - Genetics/Biology/Evolution 1193335 1190829 2024-10-03T12:41:04.833618 2023-10-04T03:35:59.081806 text/html text/html 1229962 2021-12-25T01:32:26 text/html 577493 2024-10-03T12:41:19.096572 application/epub+zip 593926 2024-10-03T12:41:09.128607 application/epub+zip 478104 2024-10-03T12:41:07.537608 application/epub+zip 1038655 2024-10-03T12:41:26.361008 application/x-mobipocket-ebook 984573 2024-10-03T12:41:18.080585 application/x-mobipocket-ebook 924429 2022-09-04T05:10:16.544959 application/x-mobipocket-ebook 1143555 1143550 2024-10-03T12:41:02.543630 2023-10-04T03:35:56.988789 text/plain; charset=us-ascii text/plain 1143787 2014-09-22T10:37:48 text/plain; charset=us-ascii 21567 2024-10-03T12:41:26.511988 application/rdf+xml 22222 2024-10-03T12:41:08.160776 image/jpeg 4635 2024-10-03T12:41:07.848589 image/jpeg 463924 2021-12-25T01:33:42 application/octet-stream application/zip 393131 2014-09-22T10:44:10 application/octet-stream application/zip 562038 2024-10-03T12:41:04.928628 application/octet-stream application/zip nl.wikipedia en.wikipedia