Summary

Cover containing some seeds mentioned in the letter to H. C. Watson, 28 May [1864], f.2 (S 4512).

Summary

[Outline sketches of pollen from long- and short-styled yellow cowslips and from a red cowslip.]

Summary

Instructions on measuring pollen of dimorphic plants.

Summary

Thanks WED for measuring cowslip pollen. Sends dimorphic flowers.

Summary

Thanks for DO’s Lessons in elementary botany [1864].

Asks him to inquire whether there are any twining species of Passiflora.

Summary

Experiment instructions.

Summary

Would like to come to Down to visit.

Summary

Encloses MS of his paper ["On individual sterility of Oncidium", J. Linn. Soc. Lond. (Bot.) 8 (1865): 162–7].

His next will be on Passiflora, Disemma, and Tacsonia [J. Linn. Soc. Lond. (Bot.) 8 (1865): 197–206].

When he receives proofs of his Primula paper he will add CD’s case about equal-styled cowslip.

Summary

Diagrams of short- and long-styled Pulmonaria under magnification.

Summary

Henry Holland sends thanks for Zoonomia.

Sir Henry would not expect podophyllin to be good for CD.

Summary

On the Borneo cave exploration.

ARW will send his contribution to theory of origin of man. The vast mental and cranial differences between man and apes, whereas structural differences in other parts of body are small. The problem of explaining diversity of human races along with the stability of man’s form during all historical epochs. Discussion with "Anthropologicals" [following reading of ARW’s paper, "The origin of human races", before the Anthropological Society, 1 Mar 1864].

Summary

Cannot give information about the box of Oxalis bulbs that his brother [Roland Trimen] has forwarded to CD.

Summary

Observations on style length of 150 flowers of Pulmonaria [angustifolia]. [See Forms of flowers, p. 105.]

Summary

Oxalis plants have arrived safely [see 4347].

CD regrets his mistake about Disa; will correct it.

Thanks RT for his additional facts about Disa.

Is recovering slowly from ten months’ illness.

Asks whether Strelitzia reginae grows in gardens at the Cape. Suspects it must be fertilised by a bird.

Summary

Is burning to hear CD’s reaction to Wallace’s excellent paper on man ["Origin of human races and the antiquity of man", J. Anthropol. Soc. Lond. 2 (1864): clviii–clxxxvi].

Wallace’s disclaimer of credit for natural selection is high-minded.

Summary

Discusses WED’s observations on polymorphic flowers.

Summary

CD finishing Lythrum paper [Collected papers 2: 106–31].

Pleased at Bates’s appointment

and Wallace’s paper.

Summary

Thanks for communicating Oncidium sterility paper [see 4485] to Linnean Society.

Surprised that CD’s seedlings of non-dimorphic cowslip breed true.

Surprised also that the red primrose he sent reverts to wild form. He had reasoned from red’s infertility with yellow that it was an established variety. Tries to correlate inheritance of colour and sterility between varieties.

Summary

Glad to hear CD well again.

Will send Lythrum hyssopifolium flowers from Botanic Garden if they are in bloom; does not know where to find wild specimen, but thinks they are same as garden type.

Is finishing his course of lectures, which was attended by 35–45 people.

Summary

Sends Pulmonaria anthers, with measurements of styles and pollen counts.