The embryology of the vertebrate nervous system may be an exception to the law of inheritance at corresponding ages.

After much crossing, has worked out meaning of dimorphism in Primula.

Has put Drosera off while amusing himself with Primula and orchids.

Dionaea is prettily adapted to weight detection.

No summary available.

Comments on MS of HF’s address ["On the method of Mr Darwin in his treatise on the origin of species", Rep. BAAS (1861) pt 2: 141–3]. "How odd it is that anyone should not see that all observation must be for or against some view if it is to be of any service."

Describes his health.

The response to his views in Germany, Holland, and Russia.

The Primula experiments of J. Sidebotham; HCW’s distrust of the results [see J. Sidebotham, "Specific identity of the cowslip and the primrose", Phytologist 3 (1849): 703–5].

Offers to publish Orchids, giving CD one-half of the profits of each edition.

CD’s orchid paper is to become orchid book [Orchids].

Primula paper is done [Collected papers 2: 45–63].

Mention of Volucella.

Has found the reference to Charles Morren’s paper, "On the agency of insects in causing sterility in flowers" [Proc. R. Entomol. Soc. Lond. 1 (1836): xliv–xlv].

Common white butterflies remove pollen-masses with their tarsi from plants of the Asclepiadaceae.

Bates agrees with CD on neuter ants.

Orchids.

Repeating experiment of C. F. v. Gärtner to study Huxley’s idea of physiological species.

List of Australian plants that have become naturalised in the Nilgiris [India] and are turning out the native trees.

Discusses the mimicry of the Volucella flies, and the bees and wasps they mimic. Compares it with the different object of mimicry in butterflies.

Refers to incompleteness of Cuthbert Collingwood’s paper [? "On homophormism, or organic representative forms", Proc. Liverpool Lit. & Philos. Soc. 14 (1860): 181–216].

Thanks CD for help in selecting a publisher for his book [The naturalist on the river Amazons (1863)].