Neptunia seeds germinated by applying great heat. CD wants advice of Kew gardener, R. I. Lynch, on how to proceed.

Printed public oration for CD’s Cambridge doctorate enclosed.

Sends CD his share of profits on Descent and Forms of flowers.

Wants to reprint Cross and self-fertilisation because supply of copies is entirely exhausted.

Congratulates CD on his Cambridge honour [LL.D.].

Sends proboscis of a Sphinx-moth that is 22 cms long.

Discusses eleven species of butterfly which visit Lantana, a plant which blooms only for three days and whose flowers are yellow on the first day, orange on the second, and purple on the third. Most species only visit the flowers when they are yellow.

Describes and draws the odiferous organs of a Sphinx-moth.

Describes a secondary sexual character of several species of Callidryas and other Pierinæ: the costal margin of the anterior wing is sharply serrated in the males, while it is smooth in the females.

LD is supplying coloured-glass light filters for CD’s experiments.

Suggests revisions in JDH’s 1877 Presidential Address to the Royal Society [Proc. R. Soc. Lond. (1877): 427–46].

On publishing details for various CD books.

Has no corrections for new issue of Descent [2d ed.].

Questions amount of cheque for profits.

Answers CD’s query about number of copies of Origin recently printed. Order to print 2000, rather than 1000, was given after JM’s annual sales showed demand was keeping up.

Cross and self-fertilisation will be stereotyped after CD’s corrections have been made.

Printer will be asked to keep type of Forms of flowers standing, for the present.

Congratulates W. E. Darwin, who is about to be married,

and CD for the LL.D. conferred upon him by Cambridge.

Answers CD’s query about payment made to him [for Descent and Forms of flowers] and explains the basis on which it was made. Because of CD’s wish to be paid before editions are sold off, profits must be estimated. If he were willing to accept annual statements of sales, payments based on them, and final accounting when all were sold, there would be no uncertainty. This is JM’s usual practice.

Thanks for accounts which make everything intelligible to him. Since he was glad to have Orchids published at one-half of profits for himself, he believes it would be very shabby to accept JM’s new offer of two-thirds profits. Thinks it would be fairer to both to change to JM’s usual practice with authors [i.e., annual statements of sales, payments based on them, and final accounting when all copies have been sold].