JDH suggests [Sir Mountstuart Elphinstone] Grant Duff become a Fellow of the Linnean Society. Asks after Grant Duff's continental tour with his wife. Complains that the Ayrton controversy is deteriorating further, JDH has brought it to the attention of Prime minister Gladstone & predicts it will end with the dismissal of himself or [Acton Smee] Ayrton.