Asks for name of the birds that have only once obtained summer plumage.

Wishes he could persuade ADB to experiment to see whether bower-birds prefer gay colours.

On the summer, or breeding, plumage of birds.

Gives his comments on the merits of a paper on South African botany [by J. P. M. Weale, "Notes on Bonatea", J. Linn. Soc. Lond. (Bot.) 10 (1869): 470–6].

Introduction of humble-bees into Australia.

Thanks for his memoir ["On the appendicular skeleton of the Primates"].

Asks for index to Zoological Society’s Proceedings.

Mentions article on "Barbets" by PLS in Intellectual Observer [12 (1867–8): 241–6].

Comments on reports of meteor sightings from the United States and Italy; explains why one may see a satellite of Jupiter where there is none.

Thanks for copy of HS’s First principles [? 2d ed. (1867)].

Comments on HS’s Principles of biology [1864, 1867].

The horns and spines of homopterous insects do not vary between sexes. Sexual differences in Blattidae.

Has had no less than seven grasses germinate from locust dung sent by JPMW.

JPMW’s paper on Bonatea is being printed by Linnean Society. [See J. P. M. Weale, "Structure and fertilisation of the genus Bonatea", J. Linn. Soc. Lond. (Bot.) 10 (1869): 470–6.]

Refers to Lyell’s new edition of Principles [10th ed., 2 vols. (1867–8)].