Sends stamps to the value of 1s. 1d. and asks for parcel to be sent to 6 Queen Anne Street, Cavendish Square, London.

CD sends thanks for information; he will write to Mr Bush.

In relation to the fecundation of ova CD adds that he has compared the use of very little pollen against an immense supply; found no difference in number or weight of seeds or in their germination.

Thanks LJ for his useful facts. Will "look to" the reference about the nightingale.

JJW’s note on birds was one of the most interesting CD has ever received. Asks several questions. CD is puzzled by cases of magpies whose mates were killed but who always immediately found others.

Alexander Wallace denies any effect of colour in sexual selection among Lepidoptera.

Writes at Frank Buckland’s suggestion. Can JB provide any information on the proportion of sexes in rats?

Do male rats fight for the possession of the female? Are they polygamous?