F2540    Periodical contribution:     Darwin, C. R. 1968. [15 letters, 1838-80]. In G. de Beer ed., The Darwin letters at Shrewsbury School. Notes and Records of the Royal Society 23 (1) (June): 68-85.   Text   Image   PDF

need not be taught at all; it will fall into place, later, when and if required. Before Darwin, there was no biology, only a string of facts, and he brought the first unifying general principle into the chaos: evolution. At the present time, although the amount to be discovered is even greater, there are numbers of principles and laws of wide validity, with the help of which programmes of research and of study can be drawn up, with great tidiness and economy of time. Another lamentable error is

CUL-DAR122.-    Note:    1838.02.00--1838.07.00   Notebook C: [Transmutation of species]   Text   Image

FLS. 1831 CD to Susan Darwin, Y had helped with buying equipment for Beagle voyage. But one friend is quite invaluable...he goes to the shops with me and bullies about prices . CCD1:147. 1836 History of British fishes, 1843 History of British birds. CD discussed evolution with before Origin. Tegetmeier claimed that Y introduced him to CD. Paul van Helvert John van Wyhe, Darwin: A Companion, 2021.

CUL-DAR47.90    Abstract:    [Undated]   Le Vaillant `Travels' I: 105, 142, 267, 387   Text   Image

The Complete Work of Charles Darwin Online [90] Le Valliant's Travels trans. 1/105. The Quails migrate at the Cape, but certainly never migrate from Robin I. which is only 2 leagues from the continent. [ The Quail is migratory in S. Africa, but stationary in Robin Island, only two leagues from the continent. (Le Vaillant Travels vol. 1. p. 105: Dr. Andrew Smith confirms this). A posthumous essay on instinct. In G. J. Romanes, Mental evolution in animals. With a posthumous essay on instinct by

F1555    Book:     Darwin, Francis ed. 1909. The foundations of The origin of species, a sketch written in 1842. Cambridge: University Press.   Text   Image   PDF

INTRODUCTION We know from the contents of Charles Darwin's Note Book of 1837 that he was at that time a convinced Evolutionist1. Nor can there be any doubt that, when he started on board the Beagle, such opinions as he had were on the side of immutability. When therefore did the current of his thoughts begin to set in the direction of Evolution? We have first to consider the factors that made for such a change. On his departure in 1831, Henslow gave him vol. I. of Lyell's Principles, then just

F1556    Book:     Darwin, Francis ed. 1909. The foundations of The origin of species. Two essays written in 1842 and 1844. Cambridge: University Press.   Text   Image   PDF

Cross- and Self-Fertilisation, early statement of principles of, 15, 69 n., 103 n. Crossing, swamping effect of, 2, 69, 96; — of bisexual animals and hermaphrodite plants, 2; — analogous to change in conditions, 3, 15, 69; — in relation to breeds, 68; — in plants, adaptations for, 70 Death, feigned by insects, 123 Difficulties, on theory of evolution, 15, 121, 128, 134 Disease, hereditary, 43 n., 58, 222 Distribution, geographical, 29, 31, 151, 174, 177; — in space and time, subject to same

F1556    Book:     Darwin, Francis ed. 1909. The foundations of The origin of species. Two essays written in 1842 and 1844. Cambridge: University Press.   Text   Image   PDF

come to an end, and the relations of the existing with the extinct species and of the species of the different geographical areas with one another were determined with some exactness. He does not therefore allow that any appreciable advance towards evolution was made during the actual voyage of the Beagle. Professor Judd1 takes a very different view. He holds that November 1832 may be given with some confidence as the date at which Darwin commenced that long series of observations and

F1555    Book:     Darwin, Francis ed. 1909. The foundations of The origin of species, a sketch written in 1842. Cambridge: University Press.   Text   Image   PDF

strength or permanence until at any rate quite late in the voyage. The Galapagos facts are strongly against Huxley's view, for Darwin's attention was thoroughly aroused2 by comparing the birds shot by himself and by others on board. The case must have struck him at once, without waiting for accurate determinations, as a microcosm of evolution. It is also to be noted, in regard to the remains of extinct animals, that, in the above quotation from his Pocket Book, he speaks of March 1837 as the time

F1555    Book:     Darwin, Francis ed. 1909. The foundations of The origin of species, a sketch written in 1842. Cambridge: University Press.   Text   Image   PDF

divided into two parts. But the two volumes resemble each other in general structure. Both begin with a statement of what may be called the mechanism of evolution, variation and selection: in both the argument proceeds from the study of domestic organisms to that of animals and plants in a state of nature. This is followed in both by a discussion of the Difficulties on Theory and this by a section Instinct which in both cases is treated as a special case of difficulty. If I had to divide the Origin

F1556    Book:     Darwin, Francis ed. 1909. The foundations of The origin of species. Two essays written in 1842 and 1844. Cambridge: University Press.   Text   Image   PDF

Maer and Shrewsbury during May and June 1842. It is not however written in pencil, and it consists of a single chapter on The Principles of Variation in Domestic Organisms. A single unnumbered page is written in pencil, and is headed Maer, May 1842, useless ; it also bears the words This page was thought of as introduction. It consists of the briefest sketch of the geological evidence for evolution, together with words intended as headings for discussion,—such as Affinity,—unity of type,—fœtal

F1556    Book:     Darwin, Francis ed. 1909. The foundations of The origin of species. Two essays written in 1842 and 1844. Cambridge: University Press.   Text   Image   PDF

manner as an illustration. In the Origin this does not occur; the reference to the action of secondary causes is more general, e.g. Ed. i. p. 488, vi. p. 668. 2 It is interesting to find the argument from sterility given so prominent a place. In a corresponding passage in the Origin, Ed. i. p. 480, vi. p. 659, it is more summarily treated. The author gives, as the chief bar to the acceptance of evolution, the fact that we are always slow in admitting any great change of which we do not see the