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Author : Charles Darwin
Publisher : Unknown
Page : 334 pages
File Size : 44,7 Mb
Release : 1892
Category : Fertilization of plants by insects
ISBN : NYPL:33433007351707
Author : Charles Darwin
Publisher : London : J. Murray
Page : 390 pages
File Size : 43,8 Mb
Release : 1862
Category : Science
ISBN : HARVARD:32044106378847
This 1862 publication describes the flower structure of orchids and their pollination to illustrate aspects of Darwin's evolutionary theory.
Author : Charles Darwin
Publisher : Unknown
Page : 416 pages
File Size : 46,7 Mb
Release : 1862
Category : Electronic
ISBN : ONB:+Z228275009
Author : Charles Darwin
Publisher : Unknown
Page : 372 pages
File Size : 51,5 Mb
Release : 2012-08-01
Category : Electronic
ISBN : 1904078095
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ On The Various Contrivances By Which British And Foreign Orchids Are Fertilised By Insects: And On The Good Effects Of Intercrossing Charles Darwin J. Murray, 1862 Fertilization of plants; Orchids; Pollination by insects
Author : Charles Darwin
Publisher : Unknown
Page : 128 pages
File Size : 52,6 Mb
Release : 1885
Category : Electronic
ISBN : OCLC:559162472
Author : Charles Darwin
Publisher : Theclassics.Us
Page : 68 pages
File Size : 43,8 Mb
Release : 2013-09
Category : Electronic
ISBN : 1230370811
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1862 edition. Excerpt: ... ably run into the same ovarian group: thus the vessels supplying the upper sepal, the Fig. xxxii. Upper or posterior sepal. Labellum. Section Of The Flower Of An Orchid. The little circles show the position of the spiral vessels S S. Stigmas; Sr, stigma modified into the rostellum. Ai. Fertile anther of the outer whorl; A 2 A3, anthers of the same whorl comhined with the lower petal, forming the labellum. ai 02. Kudimentary anthers of the inner whorl (fertile in Cypripedium), generally forming the clinandrum; 03, third anther of the same whorl, when present, forming the front of the column. fertile anther (A 1), and the upper pistil or stigma (i. e. rostellum S r), all unite and form the posterior ovarian group. Again, the vessels supplying one of the lower sepals, the corner of the labellum, and one of the two stigmas (S), unite and form the antero-lateral group; and so with all the other vessels. Hence, if the existence of groups of spiral vessels can be trusted, and Dr. Hooker informs me that he has never known them to speak falsely, the flower of an Orchid certainly consists of fifteen organs, in a much modified and confluent condition. "We see three stigmas, with the two lower ones generally confluent, and with the upper one modified into the rostellum. We see six stamens, arranged in two whorls, with one alone (A 1) generally fertile. In Cypripedium, however, two stamens of the inner whorl (a 1 and a 2) are fertile, and in other Orchids these two are represented in various ways more plainly than the remaining stamens. The third stamen of the inner whorl (o 3), when its vessels can be traced, forms the front of the column: Brown thought that it often formed a medial excrescence, or ridge, cohering to the labellum; or, in the case of...
Author : Darwin Charles
Publisher : Unknown
Page : 380 pages
File Size : 52,6 Mb
Release : 2018-08
Category : Electronic
ISBN : 3337616577
Author : Retha Edens-Meier,Peter Bernhardt
Publisher : University of Chicago Press
Page : 440 pages
File Size : 46,8 Mb
Release : 2014-11-05
Category : Biography & Autobiography
ISBN : 9780226044910
A quorum of scientists offer reviews and results to celebrate the 150th anniversary of 'On The Various Contrivances By Which British And Foreign Orchids Are Fertilised By Insects, And On The Good Effects Of Intercrossing' (1862). Authors of the first ten chapters follow research on the pollination and breeding systems of the same orchid lineages that interested Darwin, including temperate and tropical species. Authors on the last two chapters provide information on the floral attractants and flowering systems of orchids using protocols and technologies unavailable during Darwin's lifetime.
Author : Kirk Lougheed
Publisher : Springer Nature
Page : 134 pages
File Size : 40,8 Mb
Release : 2019-11-20
Category : Philosophy
ISBN : 9783030345037
This book presents an original discussion and analysis of epistemic peer disagreement. It reviews a wide range of cases from the literature, and extends the definition of epistemic peerhood with respect to the current one, to account for the actual variability found in real-world examples. The book offers a number of arguments supporting the variability in the nature and in the range of disagreements, and outlines the main benefits of disagreement among peers i.e. what the author calls the benefits to inquiry argument.
Author : Charles Darwin
Publisher : Tredition Classics
Page : 148 pages
File Size : 48,9 Mb
Release : 2013-01
Category : Electronic
ISBN : 3849188159
This book is part of the TREDITION CLASSICS. It contains classical literature works from over two thousand years. Most of these titles have been out of print and off the bookstore shelves for decades. The book series is intended to preserve the cultural legacy and to promote the timeless works of classical literature. Readers of a TREDITION CLASSICS book support the mission to save many of the amazing works of world literature from oblivion. With this series, tredition intends to make thousands of international literature classics available in printed format again - worldwide.
Author : Ken Thompson
Publisher : University of Chicago Press
Page : 257 pages
File Size : 46,8 Mb
Release : 2019-10-07
Category : Nature
ISBN : 9780226675701
For many people, the story of Charles Darwin goes like this: he ventured to the Galapagos Islands on the Beagle, was inspired by the biodiversity of the birds he saw there, and immediately returned home to write his theory of evolution. But this simplified narrative is inaccurate and lacking: it leaves out a major part of Darwin’s legacy. He published On the Origin of Species nearly thirty years after his voyages. And much of his life was spent experimenting with and observing plants. Darwin was a brilliant and revolutionary botanist whose observations and theories were far ahead of his time. With Darwin’s Most Wonderful Plants, biologist and gardening expert Ken Thompson restores this important aspect of Darwin’s biography while also delighting in the botanical world that captivated the famous scientist. Thompson traces how well Darwin’s discoveries have held up, revealing that many are remarkably long-lasting. Some findings are only now being confirmed and extended by high-tech modern research, while some have been corrected through recent analysis. We learn from Thompson how Darwin used plants to shape his most famous theory and then later how he used that theory to further push the boundaries of botanical knowledge. We also get to look over Darwin’s shoulder as he labors, learning more about his approach to research and his astonishing capacity for hard work. Darwin’s genius was to see the wonder and the significance in the ordinary and mundane, in the things that most people wouldn’t look at twice. Both Thompson and Darwin share a love for our most wonderful plants and the remarkable secrets they can unlock. This book will instill that same joy in casual gardeners and botany aficionados alike.
Author : Charles Darwin
Publisher : Unknown
Page : 390 pages
File Size : 50,7 Mb
Release : 1862
Category : Fertilization of plants
ISBN : BL:A0022129012
First edition of Darwin's primary work on plant fertilization. Detailing the relationship between the sexual structure of orchids and the insects that fertilize them, this was the first of three volumes that followed the publication of the Origin which contained supporting evidence for the author's theory of natural selection. Darwin concludes that plants are equal to animals in the marvels of their adaptation; for example, he observes that wind-pollinated flowers have no colours; it is only those insect-pollinated varieties that have bright coloured petals and sweet smelling nectars.
Author : Charles Darwin
Publisher : Delphi Classics
Page : 252 pages
File Size : 54,6 Mb
Release : 2017-07-17
Category : Fiction
ISBN : 9781788776172
This eBook features the unabridged text of ‘On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects by Charles Darwin - Delphi Classics (Illustrated)’ from the bestselling edition of ‘The Complete Works of Charles Darwin’. Having established their name as the leading publisher of classic literature and art, Delphi Classics produce publications that are individually crafted with superior formatting, while introducing many rare texts for the first time in digital print. The Delphi Classics edition of Darwin includes original annotations and illustrations relating to the life and works of the author, as well as individual tables of contents, allowing you to navigate eBooks quickly and easily. eBook features: * The complete unabridged text of ‘On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects by Charles Darwin - Delphi Classics (Illustrated)’ * Beautifully illustrated with images related to Darwin’s works * Individual contents table, allowing easy navigation around the eBook * Excellent formatting of the textPlease visit www.delphiclassics.com to learn more about our wide range of titles
Author : Charles Darwin
Publisher : Unknown
Page : 504 pages
File Size : 52,6 Mb
Release : 1876
Category : Conception
ISBN : OXFORD:600035439
Author : Charles Darwin,Sir Francis Darwin
Publisher : Unknown
Page : 484 pages
File Size : 52,8 Mb
Release : 1898
Category : Carnivorous plants
ISBN : NYPL:33433007351830
