Thanks THH for his article in the Academy and his defence of CD and G. H. Darwin against Mivart. Still thinks he should write plainly to Mivart.

CD has written to Mivart to say that he will never hold any communication with him in future.

Is alarmed by the petitions against vivisection that are being circulated. Believes there is scope for reasonable legislation and would like to see eminent physiologists prepare a petition so that the science could be protected and animals saved from needless suffering.

Sends suggestions for observations on glacial phenomena that might be made on the [Polar] expedition [of H. M. S. Alert and Discovery, 1875–6].

CD believes Playfair’s bill would not restrict demonstrations under anaesthetic.

Thanks for THH’s essay on species [article for an American encyclopedia].

Will probably never again write on large and general subjects; will keep to easier specific ones such as insectivorous and climbing plants.

Astonished and disgusted at Klein’s evidence. No doubt there will be severe and vicious legislation against physiology. Will give evidence before Commission.

Thanks for Elementary biology [1875]. Wishes he had had a course like it.

Is coming to London. Will call on THH.