Apologises for and explains the delay in supplying Haeckel with sponge specimens.

Mentions some of the interesting crustacean specimens he has received from the Porcupine cruise off the West of Ireland.

Gives the definition of ‘distal’ and explains what ‘thrips’ are. Suggests that LR uses his descretion in his translation of Orchids about certain descriptive phrases such as ‘saddle-formed’, but suggests he use them each at least once.

Declines offer to look over LR’s translation.