468 Hope treet. 
Providence, B. I. 
18 Hov, 1911 
Eev. H. Dupret, 
Seminary of Philosophy, 
Montreal, Canada. 
My dear Mr. Dupret:- 
The two .specimens of Hypnum have heen received. 
I thank you very much for the same. I trust you will not object 
to my regarding them in the light of an exchange, and am accord¬ 
ingly sending you two specimens which, judging from a remark in 
your letter of the 16th. you may like to have. 
With best regards, 
Mery truly yours, 
