DEPARTMENT OF THE INTERIOR 
UNITED STATES GEOLOGICAL SURVEY 
WASHINGTON D. c., Jail. 29, 1887. 
Dr. Asa, Gray, Cambridge, Mass. 
Dear Sir:- 
Your card and letter relating to the collect- 
ions of Costa Rica plants are at hand. Wien we sent the specimens 
to Kew for determination we stipulated particularly that two full 
named sets should be returned to us. About ten days ago we were 
informed by W. Thiselbon Dyer the Director, that these two sets 
had been sent to us through the Smithsonian exchange. They have 
not yet been received. When they arrive T will send one of the 
sets for your herbarium. 
Very respectfully 
