Six volumes of Candolle’s Prodromus confirm rule that small genera vary less than large. Labiatae an exception to rule.

Writes of domestic matters

and asks WED to observe cart-horses for traces of dark stripes on spine and cross-stripes on shoulder.

General success of survey makes CD very concerned about sources of error. Wants to meet JDH for an important talk about big genera. Arranges meeting.

Thanks LA for presentation copy of Contributions [to the natural history of the United States of America, vol. 1, pt 1: Essay on classification, and vol. 1, pt 2: North American Testudinata (1857)]. Flattered; CD sees there is much of highest interest to him.

Asks whether botanists tend to record varieties more carefully in large genera or small genera.

Wants information on the ranges of varieties of a species compared to the range of the species.

CD and J. D. Hooker have differed on the following question and agreed to ask several botanists: would a good botanist describing a local flora record varieties as readily in large as in small genera?

Thanks for Hewitson [British oology].

Has found more variability in birds’ nests than he expected.

Interested in WDF’s note about turkey terrified by a frog [see Natural selection, p. 488 n.].

Fertilisation of clover by bees in New Zealand.

Uneasy about biggest genera and their varieties.

H. T. Buckle’s sophistry [History of civilisation in England (1857)].

Working on bees’ cells.

Congratulations on birth of THH’s daughter [Jessie].

On aboriginal dun colour of horses.

Examples of inaccuracies and perpetuation of errors [on hybrids] by "compilers, of which I am one".

CD intends to enter WED at Christ’s College.

Thanks him for inquiries made about horses.

WDF’s nephew has forgotten to mention the most important element, whether the lizards’ eggs floated and stayed alive on sea-water.

Thanks for facts about turkeys and terrier [see Natural selection, p. 481 n.].

JDH has confirmed CD’s opinion on the affinities of species in great genera. Is looking at large genera in several local Floras to find the "range & commonness of varying species".

Has been "beyond measure interested" in the construction instincts of the hive-bee.

Notes views of Hooker and George Bentham on monotypic forms.

Has tabulated several floras and finds that large genera show preponderance in numbers of varieties. Now sees his results are quite worthless.

C. C. Babington agrees with JDH that botanists tend to note varieties more in large genera than in very small ones.

C. P. Smyth’s observations on geology and natural history of Tenerife are not precise enough to warrant publication in Philosophical Transactions. Suggests CPS draw up an abstract, for the Proceedings, of specific points actually observed, rather than conclusions arrived at on insufficient grounds.

Wrote some weeks ago about Burmese fowl-skins; is willing to send them, carriage paid.

Four queries regarding the habits of bees and ants with answers by FS interlined between each query.

Heartened that tabulations of small and large genera done in different ways yield good results. JDH has done some tabulations but has not followed CD’s method of getting equal numbers of small and large genera.

In great want of two books, which he had borrowed previously: Boreau Flora du Centre de la France and A. E. Fürnrohr, Naturhistorische Topographie von Regensburg, Bd 2 Flora Ratisbonensis.

Asks whether correspondent can assist in determining value of slate slabs with relief figures executed for Josiah Wedgwood [I].