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Darwin in letters, 1864: Failing health
Summary
On receiving a photograph from Charles Darwin, the American botanist Asa Gray wrote on 11 July 1864: ‘the venerable beard gives the look of your having suffered, and … of having grown older’. Because of poor health, Because of poor health, Darwin…
Matches: 4 hits
- … polyanthuses, and searching for specimens of the dimorphic aquatic cut-grass Leersia . In …
- … day he resumed work on the manuscript of The variation of animals and plants under domestication …
- … findings to the geographic distribution of plants and animals, lay behind the spirited discussions …
- … and for The expression of the emotions in man and animals (1872). The Copley medal …
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: 20 hits
- … or their equivalents are continually acting in the case of animals also; and as animals usually …
- … of all varieties, even of those occurring among wild animals in a state of nature, and to constitute …
- … facts and observations as to varieties occurring among wild animals, this argument has had great …
- … are called “permanent or true varieties,”—races of animals which continually propagate their like, …
- … return to it, which, from the analogy of the domesticated animals, is considered to be highly …
- … analogous to or even identical with those of domestic animals, and are governed by the same laws as …
- … the original type, and which also produces, in domesticated animals, the tendency of varieties to …
- … proportion that must obtain between certain groups of animals is readily seen. Large animals cannot …
- … or nothing to do with the matter. Even the least prolific of animals would increase rapidly if …
- … an almost inexhaustible supply. Why, as a general rule, are aquatic, and especially sea birds, very …
- … with the organization and habits of the various species of animals, and could we measure the …
- … from the general laws which regulate the existence of animals in a state of nature, and from the …
- … legitimate results. Let us now turn to domesticated animals, and inquire how varieties …
- … essential difference in the condition of wild and domestic animals is this,— that among the former, …
- … in a state of nature. If turned wild on the pampas, such animals would probably soon become extinct, …
- … from the observation of those occurring among domestic animals. The two are so much opposed to each …
- … the one is almost sure not to apply to the other. Domestic animals are abnormal, irregular, …
- … changes in species have been produced by the attempts of animals to increase the development of …
- … have not been produced or increased by the volition of those animals; but among the different …
- … enabled to outlive them . Even the peculiar colours of many animals, especially insects, so closely …
Cross and self fertilisation
Summary
The effects of cross and self fertilisation in the vegetable kingdom, published on 10 November 1876, was the result of a decade-long project to provide evidence for Darwin’s belief that ‘‘Nature thus tells us, in the most emphatic manner, that she abhors…
The writing of "Origin"
Summary
From a quiet rural existence at Down in Kent, filled with steady work on his ‘big book’ on the transmutation of species, Darwin was jolted into action in 1858 by the arrival of an unexpected letter (no longer extant) from Alfred Russel Wallace outlining a…
Matches: 3 hits
- … the next chapter, ‘Mental powers and the instincts of animals’, sorting through his notes collected …
- … October 1859 , ‘the case of Man and his Races & of other animals & that of plants is one …
- … of bears being rendered, by natural selection, more and more aquatic in their structure and habits, …
Darwin in letters, 1858-1859: Origin
Summary
The years 1858 and 1859 were, without doubt, the most momentous of Darwin’s life. From a quiet rural existence filled with steady work on his ‘big book’ on species, he was jolted into action by the arrival of an unexpected letter from Alfred Russel Wallace…
Matches: 4 hits
- … the next chapter, ‘Mental powers and the instincts of animals’, sorting through his notes collected …
- … ancestral types from which modern domestic breeds of animals have been developed. To this end, in a …
- … 3 October 1859, ‘the case of Man and his Races & of other animals & that of plants is one …
- … of bears being rendered, by natural selection, more and more aquatic in their structure and habits, …
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: 28 hits
- … selection, with artificial to help it, will produce better animals and better men than the present, …
- … creation of man, however it may have been with the lower animals and with plants. No doubt, …
- … component cells of an organism are to the higher sorts of animals and plants—the mind of such an age …
- … will raise the question, how the diverse sorts of plants and animals came to be as they are and …
- … origin and can affirm that the present forms of plants and animals are the primordial, the …
- … all species vary more or less; that domesticated plants and animals, being in conditions favorable …
- … So long as the existing species of plants and animals were thought to have originated a few thousand …
- … domesticated varieties of grain, of fowls, and of other animals, were pictured and mummified by the …
- … England), associated with the bones of extinct species of animals.’ These implements, indeed, were …
- … back the existence of many of the present lower species of animals, and probably of a larger number …
- … of the same class.’ Furthermore, ‘I believe that all animals have descended from at most only four …
- … continued with little change down to our days are the marine animals of the lower grades, especially …
- … would be almost sure to extinguish such huge and unwieldy animals as mastodons, mammoths, and the …
- … conclusion, namely, that the geological succession of animals and plants appears to correspond in a …
- … within each class and order; and that the highest plants and animals have appeared only in …
- … etc. There are entire families, of nearly every class of animals, which in the state of their …
- … era, those regions became again eminently adapted to such animals? Why, but because, by their …
- … The larger part of the plants, and still more of the animals, of each separate country are peculiar …
- … general ‘parallelism between the order of succession of animals and plants in geological times, and …
- … also ‘the parallelism between the order of succession of animals in geological times and the changes …
- … since the only material sequence we know of among plants and animals is that from parent to progeny …
- … which is permanent in fishes; and that thousands of animals and plants have rudimentary organs which …
- … the two organic kingdoms was broad and absolute. Plants and animals belong to two very different …
- … organisms may be said to be at first vegetables and then animals, others, like the spores and other …
- … into the higher sensitiveness of the lower class of animals. Nor need we hesitate to recognize the …
- … to the other psychical manifestations of the higher brute animals. The gradation is undoubted, …
- … so to say, striven after, but never attained; in the lower animals it is striven after with greater …
- … the Examiner, ‘suppose, for instance, the gills of an aquatic animal converted into lungs, while …
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