Discusses his health following a visit to Dr C[lark?]. Has made an appointment for CD.

Sends table showing relative force of impact of weight dropped on a plane inclined at different angles.

Information for CD’s use in investigating digestion by Drosera.

Sends tracing of ancient Egyptian illustration of dogs and cattle.

Sends CD a draft of a letter to Nature [see 9087], which he thinks expresses CD’s meaning.

Sends formula for pure pepsin for experiments on digestion of Drosera, and information on legumin. Will send chlorophyll soon.

Has decided to send the letter ["Variation of organs", Nature 8 (1873): 505].

Writes of his poor health and problems of settling in at Trinity.

Mimosa prostrata, described by John Lindley as M. marginata, native of Brazil.

Who supplies CD with distilled water and chemicals?

Thanks CD for copies of his books.

Sends chlorophyll extract [for CD’s work on Drosera digestion].

On CD’s paper ["Complemental males of certain cirripedes", Collected papers 2: 177–82].

Comments on paper by W. H. Dallinger and J. J. Drysdale ["Life history of a Cercomonad", Mon. Microsc. J. 10 (1873): 53–8].

Discusses origin of life, the Gastraea theory and concept that primary germ layers are homologous in all animals. Notes similar views of E. Ray Lankester ["On the primitive cell-layers of the embryo", Ann. & Mag. Nat. Hist. 4th ser. 11 (1873): 321–38].

Reception of Darwinism in Germany.

The results of EF’s tests for acids in the secretion of Drosera are largely negative [see Insectivorous plants, p. 88].

Has got a cold, so will not go to Kew. Wrote to Hartnack about price of microscopes and describes own model. Told Hooker about Tisley Spiller’s microscope in Paris.

On bodies of varying elasticity bouncing off inclined planes [see 9096].

Sends some litmus paper for CD.

Feeding habits of the tobacco worm; it eats only five plants, all very different, but of same botanical family.

Describes work on Nepenthes – more difficult than Drosera.

Has written to Dublin for a Drosophyllum.

Sends an essay ["Mikrogeologische Studien über das kleinste Leben der Meeres-Tiefgründe aller Zonen und dessen geologischen Einfluss", Abhandlungen der Preussischen Akademie der Wissenschaften zu Berlin (1873): 131-98.]

with expressions of admiration. CGE is confident their differences will not estrange them.

Remembers with gratitude the [Atlantic] dust that CD made available to him in 1844 [see 747].

Further details on inheritance of an eyelid abnormality.

Describes his experiments on Nepenthes; finds action analogous to that in Drosera.

Observations on the leaves of Desmodium. Most are trifoliate; none has tendrils. Gives some comments from Hooker.