Recommends he read passages on bees by C. T. E. von Siebold [in On the true parthenogenesis in moths and bees (1857)].
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Recommends he read passages on bees by C. T. E. von Siebold [in On the true parthenogenesis in moths and bees (1857)].
Have all varieties been bred from the same set of eggs so that there can be no doubt they are all the same species?
Discusses a proposed expedition to Australia. Urges collecting and investigating productions of isolated islands. Recommends dredging the sea-bottom.
Mentions keeping Helix pomatia alive in sea-water.
Comments on TCE’s work [Catalogue of the species of birds in his collection (1856)].
Mentions African dog’s skin.
Asks about colours of horses
and about variation in tracheae of male birds.
Ill.
Comments on TCE’s study of birds’ bones.
His work on variation progresses.
Asks about horses with bars like zebra or ass.
Sends TCE West African dog’s skin.