Asks AG for details of variation in patterning of the banded snake.

Note on sexual differences in Monacanthus.

Sends some questions on secondary sexual differences of fishes [missing], which he hopes AG will look over.

Invites AG to come to Down.

Encloses queries on sexual differences and nest-building habits of fish.

Sends proofs of his fish paper.

Will observe modification of colour in fish.

Is studying the development of the axolotl.

Encloses notes in reply to CD’s queries on fishes.

Thanks for answer to questions.

Has analogous questions on reptiles that he will send to AG. The subject interests him, but CD must try not to fall into his common error of "being too speculative".