October 
, 1911. 
Dear Professor Pittier: 
I beg leave to acknowledge the receipt of your oomraun- 
ication of September 18, giving a very entertaining account of 
your recent explorations, which will be brought to the atten¬ 
tion of Secretary Walcott on his return to Washington. Mean¬ 
while I shall give an opportunity to the staff to read your 
interesting observations on the Indians and plants of the 
localities visited. 
I enclose a check for #200. as you request. A duplicate 
of your pocket lens has been purchased and is sent by registered 
mail, and the photographic plates and films have been ordered 
and will be sent immeciiately on their receipt. 
The effort to advance the civilization of the natives 
of Sta. Isabela, as evidenced by the decree of the Inspector of 
Police of that district, has been noted with much interest. 
Very truly yours. 
Acting Secretary. 
Professor H. Pittier, 
Smithsonian Manama Expedition, 
Culebra, Canal Zone. 
