Birthday greetings.

Thanks for birthday greetings.

Comments on work at Naples Zoological Station. F. M. Balfour to visit Naples. Would like to send third son [Francis Darwin] to learn art of observing marine animals.

Health indifferent.

CD is grieved to hear that AD is overworked and troubled about the Zoological Station. Glad he is now writing to seek assistance from English naturalists. Sends a subscription of £100 and £10 each from George and Francis Darwin.

His gratitude for CD’s gift. An account of his difficulties with the Zoological Station and his health.

F. M. Balfour has told him that CD would like to see the question of complemental males in cirripedes studied again. AD would like to enter the field and to study the whole morphological development of cirripedes.

Describes the interest in embryological work in Russia and Germany.

Has written to J. Murray to have account of the Zoological Station inserted in the Murray guidebook.

The circular about the Station has been printed; some have already signed.

Received R. Kossman’s paper on Anelasma ["Untersuchungen über die durch Parasitismus hervorgerufenen Umbildungen in der Familie der Pedunculata", Verh. Phys.-med. Ges. Würz. N. F. 5 (1874): 129–57]. The case is the most interesting ever recorded of gradation, i.e., from an animal with a stomach to one with roots like a plant.

Delighted he will examine the complemental males of Scalpellum.