Discusses the colouring of the young of various breeds of rabbit.
Observations on results of various poultry crosses and on a character which is linked to sex.
Showing 81–100 of 2199 items
Discusses the colouring of the young of various breeds of rabbit.
Observations on results of various poultry crosses and on a character which is linked to sex.
Will be pleased to review Asa Gray’s pamphlet [see 3068].
Is not surprised that blind cave insects are sometimes found in other dark places.
Asks for a testimonial for Edward Newman.
Discusses the Origin, considers natural selection works well when applied to the evolution of nations and groups of men; on the other hand feels the classification of mineral elements is a damaging analogy as it parallels organic classification but could not be derived by any evolutionary means.
Sends his paper ["Insect fauna of the Amazon valley", Trans. R. Entomol. Soc. Lond. 2d ser. 5 (1861): 223–8, 335–61].
Points out three areas of interest arising from the study of the species of Papilio: the derivation of the fauna, the variability of the species, and the permanence of local varieties.
Discusses J. S. Baly’s views on specific differences in reproductive organs [Catalogue of the Hispidae in the collection of the British Museum (1858)].
Discusses specific varieties, especially geographic varieties.
Comments on the effects of the glacial age on the tropics.
Sexual selection.
A bee’s sting always remains behind.
The stinging of bees and wasps contrasted.
Index of Origin does not refer to variability of rudimentary organs mentioned at pp. 149, 168. Offers references to Rudolf Leuckart and to Franz von Leydig to support CD’s point.
Corrects CD’s statement [Origin, 3d ed.] that Madeira does not possess one peculiar bird. There is one, out of the 99.
Sends three tables on the known geological distribution of genera and subgenera of Brachiopoda. Has been continually puzzled by intermediate forms, and is convinced that the greater number of species can be linked together. "Natura non facit saltum."
Sends some replies to CD’s queries and data on pigeon flights between Bordeaux and Verviers.
[Queries in CD’s hand answered on same pages by WBT.] Sexual selection of fowls; role of beauty in cocks.
Sexual behaviour of fowls.
Describes her compassion for all his sufferings and writes of her wish that his gratitude could be offered to heaven as well as to herself. To her, the only relief is to try to believe that suffering and illness are from God’s hand "to help us to exalt our minds & to look forward with hope to a future state".
Will look for botanical specimens CD requested.
Tells of a kestrel with a broken leg which apparently was forced to change its diet to worms and snails because of the injury.
On his father’s crossing experiments with cacti, in which hybrids were found quite fertile.
On his breeding of guinea-pigs.
Sends Miss E. Watts’s message about crested fowls and Brahmas.
Offers CD a live Proteus anguinus from Adelsberg cave. In his hands it will have a fair chance of developing into "some type of Columbidae (say a pouter or tumbler)".
The Origin is universally praised in Italy and Germany, even by those who disagree with it.
Notes observations on the spread of bees in New Zealand and their importance as pollinators of clover and other introduced plants.
Elaborates on his article ["A popular exposition of Mr Darwin on the origin of species", Macmillan’s Mag. 3 (1860): 81–92]. Was anxious to point out that CD’s method of investigation is philosophically correct. Asks permission to call.
Distribution of varieties and subspecies.
George Maw’s review of the Origin [Zoologist 19 (1861): 7577–611].