Discusses transport of fish to Lake Constance by flooding.
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Discusses transport of fish to Lake Constance by flooding.
Sexual differences in reptiles, especially Indian [see A. Günther, The reptiles of British India (1864)].
The Cyprinodontidae family of fishes exhibits sexual differences as remarkable as any in reptiles or birds [Descent 2: 7, 9–10].
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.
Sends a list of queries for AG.
Asks whether AG can supply specimens for illustrations [for Descent]. Hopes Mr Ford will do the drawings.
Mr Ford is attending to CD’s drawings [for Descent].
Death of AG’s wife.
Replies to CD’s queries on sexual habits and differences in fish and lizards.