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Divergence
Summary
In a later account of how he had come to the evolutionary ideas published in Origin, Darwin wrote: 'Of all the minor points, the last which I appreciated was the importance & cause of the principle of Divergence' (to Ernst Haeckel, [after 10]…
Matches: 1 hits
- … as he described it ' the tendency to the preservation from extinction of the most different …
Darwin in letters, 1851-1855: Death of a daughter
Summary
The letters from these years reveal the main preoccupations of Darwin’s life with a new intensity. The period opens with a family tragedy in the death of Darwin’s oldest and favourite daughter, Anne, and it shows how, weary and mourning his dead child,…
Matches: 3 hits
- … most public proponents of land-bridges. Variation and extinction The other main focus …
- … into view the occurrence of aberrance through the effects of extinction. In his first letters after …
- … notions that aberrant forms would generally be found where extinction had removed related species, …
Biodiversity and its histories
Summary
The Darwin Correspondence Project was co-sponsor of Biodiversity and its Histories, which brought together scholars and researchers in ecology, politics, geography, anthropology, cultural history, and history and philosophy of science, to explore how…
Matches: 1 hits
- … David Sepkoski (MPI for the History of Science, Berlin): Extinction and the value of diversity …
Alfred Russel Wallace’s essay on varieties
Summary
The original manuscript about varieties that Wallace composed on the island of Gilolo and sent to Darwin from the neighbouring island of Ternate (Brooks 1984) has not been found. It was sent to Darwin as an enclosure in a letter (itself missing), and was…
Matches: 4 hits
- … the former conditions now the least so, and even causing the extinction of the newer and, for a time …
- … step towards such inferior forms would have led to the rapid extinction of the race; still less …
- … at the very first step, by rendering existence difficult and extinction almost sure soon to follow. …
- … with all the phenomena presented by organized beings, their extinction and succession in past ages, …
Darwin and Human Nature
Summary
There is substantial correspondence to illuminates Darwin’s published work on human evolution in Descent of Man and Expression of the Emotions. The letter sets and discussion questions presented here focus on nineteenth-century debates about the unity of…
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- … in the transformation, preservation, incorporation, or extinction of these societies; the history of …
Language: key letters
Summary
How and why language evolved bears on larger questions about the evolution of the human species, and the relationship between man and animals. Darwin presented his views on the development of human speech from animal sounds in The Descent of Man (1871),…
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- … to the process of geological change, involving evolution, extinction, and transitional forms. “I …
Essay: Natural selection & natural theology
Summary
—by Asa Gray NATURAL SELECTION NOT INCONSISTENT WITH NATURAL THEOLOGY. Atlantic Monthly for July, August, and October, 1860, reprinted in 1861. I Novelties are enticing to most people; to us they are simply annoying. We cling to a long-accepted…
Matches: 4 hits
- … the diversification of human labor); and also leads to much extinction of intermediate or unimproved …
- … adapted to such animals? Why, but because, by their complete extinction in South America, the line …
- … impressed on matter by the Creator, that the production and extinction of the past and present …
- … vary, or that the perpetuation of a variety necessitates the extinction of the parent breed. For …
Race, Civilization, and Progress
Summary
Darwin's first reflections on human progress were prompted by his experiences in the slave-owning colony of Brazil, and by his encounters with the Yahgan peoples of Tierra del Fuego. Harsh conditions, privation, poor climate, bondage and servitude,…
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- … of 'white races', the expansion of European empires, and the extinction or extermination …
Review: The Origin of Species
Summary
- by Asa Gray THE ORIGIN OF SPECIES BY MEANS OF NATURAL SELECTION (American Journal of Science and Arts, March, 1860) This book is already exciting much attention. Two American editions are announced, through which it will become familiar to many…
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- … and the complex action of natural selection, entailing extinction and divergence of character, as we …
- … Nature, with every fact on distribution, rarity, abundance, extinction, and variation, will be dimly …
- … so high our presumption, that we marvel when we hear of the extinction of an organic being; and as …
- … The abundance of some forms, the rarity and final extinction of many others, and the consequent …
Dramatisation script
Summary
Re: Design – Adaptation of the Correspondence of Charles Darwin, Asa Gray and others… by Craig Baxter – as performed 25 March 2007
Matches: 3 hits
- … error: GRAY: 40 … what you say about extinction… DARWIN: … it is not …
- … a morsal of his thinking. DARWIN: I look at Extinction as common cause of small genera …
- … that species arise like our domestic varieties with much extinction; and then test this hypothesis …
A tale of two bees
Summary
Darwinian evolution theory fundamentally changed the way we understand the environment and even led to the coining of the word 'ecology'. Darwin was fascinated by bees: he devised experiments to study the comb-building technique of honey bees and…
Matches: 1 hits
- … Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms. . . …
Scientific Networks
Summary
Friendship|Mentors|Class|Gender In its broadest sense, a scientific network is a set of connections between people, places, and things that channel the communication of knowledge, and that substantially determine both its intellectual form and content,…
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- … species have arisen, like domestic varieties, with much extinction, and that there are no such …
Darwin and religion in America
Summary
Thomas Dixon, 'America’s Difficulty with Darwin', History Today (2009), reproduced by permission. Darwin has not been forgotten. But he has, in some respects, been misremembered. That has certainly been true when it comes to the relationship…
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- … impressed on matter by the Creator, that the production and extinction of the past and present …
New material added to the American edition of Origin
Summary
A ‘revised and augmented’ American edition of Origin came on the market in July 1860, and was the only authorised edition available in the US until 1873. It incorporated many of the changes Darwin made to the second English edition, but still contained…
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- … of each class, does not at all necessarily lead to the extinction of those groups with which they do …
Before Origin: the ‘big book’
Summary
Darwin began ‘sorting notes for Species Theory’ on 9 September 1854, the very day he concluded his eight-year study of barnacles (Darwin's Journal). He had long considered the question of species. In 1842, he outlined a theory of transmutation in a…
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- … species arise like our domestic varieties with much extinction; & then test this hypothesis …
Essay: What is Darwinism?
Summary
—by Asa Gray WHAT IS DARWINISM? The Nation, May 28, 1874 The question which Dr. Hodge asks he promptly and decisively answers: ‘What is Darwinism? it is atheism.’ Leaving aside all subsidiary and incidental matters, let us consider–1. What the…
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- … and physiological, reproduction, variation, birth, struggle, extinction–in short, all that is going …
Darwin in letters, 1844–1846: Building a scientific network
Summary
The scientific results of the Beagle voyage still dominated Darwin's working life, but he broadened his continuing investigations into the nature and origin of species. Far from being a recluse, Darwin was at the heart of British scientific society,…
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- … expand some of his previous suggestions about the causes of extinction, and to supplement the …
Origin: the lost changes for the second German edition
Summary
Darwin sent a list of changes made uniquely to the second German edition of Origin to its translator, Heinrich Georg Bronn. That lost list is recreated here.
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- … thus apparently contradicting the belief in much recent extinction near the equator. How far his …
Darwin in letters, 1837–1843: The London years to 'natural selection'
Summary
The seven-year period following Darwin's return to England from the Beagle voyage was one of extraordinary activity and productivity in which he became recognised as a naturalist of outstanding ability, as an author and editor, and as a professional…
Matches: 1 hits
- … of genera and species, isolation, the conditions affecting extinction, and the relationship of the …
Darwin’s reading notebooks
Summary
In April 1838, Darwin began recording the titles of books he had read and the books he wished to read in Notebook C (Notebooks, pp. 319–28). In 1839, these lists were copied and continued in separate notebooks. The first of these reading notebooks (DAR 119…
Matches: 2 hits
- … is added an appendix . (Appendix, Part A: “On the extinction of species”; Appendix, Part B: “On …
- … Marc Antoine. 1837. De la dégénération et de l’extinction des variétés de végétaux . Paris. …
