Prmgle JJcrbarumt 
G. P. BURNS, Director 
L. H. FLINT, Curator 
pittfrerstiu of ^ferment 
BURLINGTON, VT., U. S. A. 
July 25th, 1921. 
Miss Mary Bay 
Gray Herbarium 
Harvard University 
Cambridge, Mass. 
My dear Miss Day - . 
I have "been thinking that you might like to 
complete your records of the Pringle collections in Mexico, and 
in return for your kindness in allowing Mrs. Flint to use your 
numerical list we have prepared a 'list of missing'. We do not 
pretend to know anything about the proper nomenclature, the most 
recent usage, etc., so please do not object to the inclusion os 
names which seem to you obsolete. In a short while we expect to 
send out a first list of Pringle's Mexican Plants to various 
Institutions in the hope of obtaining an authoritative revision. 
Very truly yours - 
fWlV.' >h I 
P.S. Mrs. Flint wishes to be remembered to you. LHF. 
