CABLE ADDRESS - MUSEUM. CHICAGO 
Field Museum of Natural History 
ROOSEVELT ROAD AND LAKE MICHIGAN 
Chicago 
September 21, 1938 
Dear Mr . Arnes : 
About two weeks from now, I hope to turn i 
for printing the fourth and final part of the Flora of 
Costa Rica. I hope especially to be able to read proof 
on it before leaving—November 16—for Guatemala. 
At the end of the part there will be a list of addi 
tions and corrections, covering the whole volume. Of 
course, I have references to the new species you have 
published recently from Costa Rica. If you have kept 
and have easily available any other records of additions 
to the Costa Rican orchids, I should be glad to have 
them for inclusion. Probably it will be some?/hat more 
than two weeks before the additions are needed, perhaps 
twice that long, so there is no need for undue haste 
in preparation of the list. 
Sincerely yours, 
ADDRESS ALL CORRESPONDENCE, PUBLICATIONS AND PACKAGES 
TO FIELD MUSEUM OF NATURAL DISTORT, CHICAGO, U. S. A 
