I hope you will go on with it another year. With many thanks, my dear Jenyns,
Yours very truly, CHARLES DARWIN.
CHARLES DARWIN TO J.D. HOOKER. Down, Sunday [April 18th, 1847].
My dear Hooker,
I return with many thanks Watson's letter, which I have had copied. It is a capital one, and I am extremely obliged to you for obtaining me such valuable information. Surely he is rather in a hurry when he says intermediate varieties must almost be necessarily rare, otherwise they would be taken as the types of the species; for he overlooks numerical frequency as an element. Surely if A, B, C were three varieties, and if A were a good deal the commonest (therefore, also, first known), it would be taken as the type, without regarding whether B was quite intermediate or not, or whether it was rare or not. What capital essays W would write; but I suppose he has written a good deal in the