Is grateful for his article on musical scales. Queries regarding musical sounds. Has had to leave his old abode due to building operations.

Fears copy of AW’s publication [Über die Berechtigung der Darwin’schen Theorie (1868)] lost in mail. Asks for another.

Glad AW approves of his work

and objects to Nägeli’s law of perfection.

Thinks Moritz Wagner overrates necessity for emigration and isolation.

R. I. Murchison has forwarded JH's letter about the noises at Nakkus in Sinai. Has heard the noises several times and thinks they are caused by the movement of sand. There is much static electricity in sand.

Some photographs support the sudden disappearance of the spot on 17 Sept. Some photographs are misdated. The relation of Jupiter and sunspots suggests previously unknown interconnections in the solar system.

Describes Lappago aleina, a species of South African grass,

and reports his observations on locusts and their feeding habits.

Sent JH's remarks to Mr. Titterton at Ely. Will endeavor to maintain accuracy. The remarks about Jupiter's action are contrary to the general consensus that planets in opposition close up spots.

His correspondents in Lapland will provide CD with the information on reindeer horns. Refers him to Linnaeus, Amoenitates academicae, vol. 4.

Thanks KvS for information about expression.

Answer has been delayed as SL's letter was directed to MacMillans. Can be no two opinions on the contribution to scientific knowledge of Sir John Lubbock. Has full confidence in his political opinions.

Delighted with mechanisms of Salvia and Viola. How can anyone who compares structure of Viola cornuta and common violet still suppose them to be separate creations?

Encloses Queries about expression.

Thanks for his article on musical scales. Will read it later when he has time. Comments on the system of equal temperament. Will send some of his own papers later.

Congratulates CD on success at Cambridge [of George Darwin].

Would like CD to study the anomalous Cardamine pratensis.

Suggests THF write a paper on violets. Asa Gray, once a sceptic, now declares he is convinced whole structure of a flower is adapted for a cross with another individual.

Urges THF not to give up Pangenesis lightly. "It has thrown light on my mind in regard [to] a great series of complex phenomena."

Thanks CD for a recent letter.

Reports on his health, which has been bad for 12 months.

Sends extracts of works on domestication.

Discusses the pairing of various birds; comments on the pugnacity of partridges, pheasants, male guinea-fowl, and peacocks.

Gives proportions of sexes in pheasants.

No summary available.

Information on proportion of sexes born in sheep.

No summary available.

Hopes that JH will contribute series of papers under heading, 'A Life's Retrospect in Science,' from various periods of JH's career, for publication in Good Words.

Thanks for verses on the transit of Mercury; comments on observation of an auroral arch and eclipse observations of the solar corona.