A331    Book:     Poulton, Edward Bagnall. 1909. Charles Darwin and the Origin of species: addresses, etc., in America and England in the year of the two anniversaries. London: Longmans, Green, and Co.   Text   Image

examples occur at all among the numberless mimetic Diptera, Coleoptera, c., they are probably excessively scarce. In some of the orb-weaving spiders, however, the males mimic ants, while the much larger females are non-mimetic. Although still believing that Wallace's hypothesis in large part accounts for the facts briefly summarized above, the present writer has recently been led to doubt whether it offers a complete explanation. Mimicry in the male, even though less beneficial to the species

A162    Book:     Seward, A. C. ed. 1909. Darwin and modern science. Essays in commemoration of the centenary of the birth of Charles Darwin and of the fiftieth anniversary of the publication of The origin of species. Cambridge: Cambridge University Press.   Text   Image   PDF

we have already explained, embark on a gradual course of retrograde development. In ants the degeneration has gone so far that there are no wing-rudiments present in any species, as is the case with so many butterflies, flies, and locusts, but in the larvae the imaginal discs of the wings are still laid down. With regard to the ovaries, degeneration has reached different levels in different species of ants, as has been shown by the researches of my former pupil, Elizabeth Bickford. In many

A162    Book:     Seward, A. C. ed. 1909. Darwin and modern science. Essays in commemoration of the centenary of the birth of Charles Darwin and of the fiftieth anniversary of the publication of The origin of species. Cambridge: Cambridge University Press.   Text   Image   PDF

undemonstrable, but is scarcely theoretically conceivable, for the secondary variations which accompany or follow the first as correlative variations, occur also in cases in which the animals concerned are sterile and therefore cannot transmit anything to their descendants. This is true of worker bees, and particularly of ants, and I shall here give a brief survey of the present state of the problem as it appears to me. Much has been written on both sides of this question since the published

A162    Book:     Seward, A. C. ed. 1909. Darwin and modern science. Essays in commemoration of the centenary of the birth of Charles Darwin and of the fiftieth anniversary of the publication of The origin of species. Cambridge: Cambridge University Press.   Text   Image   PDF

when it occurs in sterile animal forms, where we are free from the doubt as to the alleged Lamarckian factor which is apt to confuse our ideas in regard to other cases. If we regard the variation of the many determinants concerned in the transformation of the female into the sterile worker as having come about through the gradual transformation of the ids into worker-ids, we shall see that the germ-plasm of the sexual ants must contain three kinds of ids, male, female, and worker ids, or if the

A162    Book:     Seward, A. C. ed. 1909. Darwin and modern science. Essays in commemoration of the centenary of the birth of Charles Darwin and of the fiftieth anniversary of the publication of The origin of species. Cambridge: Cambridge University Press.   Text   Image   PDF

is afforded by the Oriental Nymphaline, Cethosia, in which the males of some species are rough mimics of the brown Danaines. In some of the orb-weaving spiders the males mimic ants, while the much larger females are non-mimetic. When both sexes mimic, it is very common in butterflies and is also known in moths, for the females to be better and often far better mimics than the males. Although still believing that Wallace's hypothesis in large part accounts for the facts briefly summarised above

A162    Book:     Seward, A. C. ed. 1909. Darwin and modern science. Essays in commemoration of the centenary of the birth of Charles Darwin and of the fiftieth anniversary of the publication of The origin of species. Cambridge: Cambridge University Press.   Text   Image   PDF

Danaida genutia, 57 D. plexippus, 57 Dante, 513 Dantec, Le, 472 Darwin, Charles, as an Anthropologist, 137-151 —on ants, 34, 35 —and the Beagle Voyage, 299, 345-356 —on the Biology of Flowers, 401-423 —as a Botanist, 307, 308, 315 —his influence on Botany, 306, 307 —and S. Butler, 881, 90 —at Cambridge, 343, 366 —on Cirripedia, 375, 457 —on climbing plants, 387-392 —on colour, 277, 278, 280, 281 —on coral reefs, 367-370 —on the Descent of Man, 112-136 —his work on Drosera, 390, 392 —at

A546    Periodical contribution:     Anon. 1909. A visit to Darwin's village: reminiscences of some of his humble friends. Evening News (12 February): 4.   Text   Image

together. I left him and got my trade. I used to make all his tackle, and for Sir John Lubbock, too. I made many a pound over Sir John's ants. One day Mr. Darwin told me to make him six mahogany boxes, three inch square inside, and one side perforated zinc. I brought them up, and he bid me put them on six wee Dutch clocks and take off the hands. Then they were fixed so that the boxes went round and round with the clockwork. And he sowed seeds in them. I never could make out what it was for, but one

F1553.2    Book:     Litchfield, H. E. ed. 1915. Emma Darwin, A century of family letters, 1702-1896. London: John Murray. Volume 2   Text   Image   PDF

blessing it is to have one whom one can always trust, one always the same, always ready to give comfort, sympathy and the best advice. God bless you, my dear, you are too good for me. Yesterday I was poorly: the Review and confounded Queen was too much for me; but I got better in the evening and am very well to-day. I cannot walk far yet; but I loiter for hours in the Park and amuse myself by watching the ants: I have great hopes I have found the rare slave-making species, and have sent a

F1592.1    Book:     Marchant, James ed. 1916. Alfred Russel Wallace letters and reminiscences. London: Cassell. Volume 1.   Text   Image   PDF

I wrote to Forel, who is always at work on ants, and told him of your views about the dispersal of the blind Coleoptera, and asked him to observe. I spoke to Hooker about your book, and feel sure that he would like nothing better than to consider the distribution of plants in relation to your views; but he seemed to doubt whether he should ever have time. And now I have done my jottings, and once again congratulate you on having brought out so grand a work. I have been a little disappointed at

F1592.2    Book:     Marchant, James ed. 1916. Alfred Russel Wallace letters and reminiscences. London: Cassell. Volume 2.   Text   Image   PDF

Houzeau's Faculties of Man and Animals VII. 68 1872 Misleading Cyclop dias VII. 277 1873 Modern Applications of the Doctrine of Natural Selection (Reviews) VII. 303 1873 Inherited Feeling VII. 337 1873 J. T. Moggridge's Harvesting Ants and Trapdoor Spiders VII. 461 1873 Cave Deposits of Borneo [page] 26