My dear Sir

I write only to say that I have now described all your specimens, & have merely to go over them a second time. I have heard from M^r Sowerby that about half are figured & I shall in a week or 10 days time take up the remainder to be figured.— I think it is since I last wrote to you, that the Palæontographical Society has agreed to publish my monograph on the fossil species.—

Your materials have indeed been of extreme value to me.— I assure you deliberately that the length of time I have detained your specimens has not been caused by idleness.—

I remain with thanks | Yours faithfully | C. Darwin

This scrawl obviously requires no answer.—

P.S. I have opened my note especially to thank you for having sent me so many specimens; had it not been for these, I sh^d in the species last described by me fallen into some great errors—¹ I suppose in this weather you have not been collecting, but if you have lately procured even any fragments & do not grudge the trouble of sending me so very many parcels I have no doubt they w^d aid me.— It is certain that many valves remain to be found in chalk of Norwich.—