No summary available.

No summary available.

Personal news – is unwell.

Mentions "Twin-papers" ["Short notes on heredity, etc., in twins", J. Anthropol. Inst. 5 (1876): 324–9] sent by Galton.

JDH has heard from Asa Gray, who approves of the botany primer [Botany (1876)].

A believer in evolution seeks to convince CD that a spiritual creative force, rather than natural selection, explains its operation.

Comments on Weismann’s remarks on the possibility of sexual selection in the genus Daphnia.

A. R. Wallace has published paper giving up sexual selection [Review of St George Jackson Mivart’s Lessons from nature, as manifested in mind and matter.] in Academy, 10 and 17 June 1876, pp. 587–8.]

Has received a baffling article on God, immortality, and socialism under a Darwinian point of view.

Clerk Maxwell has disagreed with CD on molecular calculations in relation to Pangenesis in Encyclopaedia Britannica article ["Atom", Encyclopaedia Britannica, 9th ed. (1875) 3: 36–49].

Complies with correspondent’s request; encloses photographs of himself.

At last, Expression is beginning to sell again.

Cooke has not yet decided on number of Variation [2d ed.] to print.

Asks GHD to calculate average or mean heights of crossed and self-fertilised plant species.

Provides CD with a method of obtaining a numerical ratio that expresses the superiority in heights of crossed plants to self-fertilised plants.

He has confuted Descent.

Enclosures announce his cures of potato blight, epilepsy, etc.

Has confirmed CD’s observations on Drosera.

Asks whether CD agrees that it is "no longer a fact" that the bladders of Utricularia vulgaris enable the plant to become lighter for fecundation and heavier when that act is accomplished. Plans to undertake further observations, under very high-powered microscopes, of mechanism of digestion.

Bug on Tilia, cited in Variation, was Cimex apterus.

Two photographs of T. W. Clarke, Jr, aged three, offered as examples of expression.

Sends copy of Arabische Korallen [1876].

Comments on reception of his paper on "Gastrula" [see 10012].

Thanks FG for his report [on the statistical validity of CD’s experiments; see Cross and self-fertilisation, pp. 16–18]. Discusses FG’s comments, his own experiments, and the means by which the results may be analysed.

Reports on the tendency of the normally fruitless Convolvulus arvensis, to form fruit when roots are cut and plant is in danger of dying.

Reports an observation on his child’s behaviour;

claims to have captured two moths of different species in the act of copulating with each other.

Proposes an unorthodox theory of generation that explains sex determination and atavism.