WCP2993

[1]¹

55. Granville Park,

Lewisham, London, S.E.

Aug[ust]. 14 [19]10.

Dear Mr. Wallace,

I believe the number has been estimated at 100, 000. But the possibilities are infinite: we can turn out new compounds of the thousand, if required. Nowadays we limit the output to those of some special interest. Nature, however, is very conservative & [2] the possibilites are limited in comparison with these afforded by the laboratory; this is because vital chemistry is in large measure, a directed process. I have dealt with this point to some extent in my address last year at the B. G. meeting, of which I venture[?] to enclose a copy.

Yours truly² | Henry E. Armstrong [signature]