17 
OAKES AMES, director. 
BOTANIC CARDEN OF HARVARD UNIVERSITY, 
CAMBRIDGE, MASS. U.S.A. 
May 22, 1922. 
My dear Mr. Powell; 
The labels hare come, at last, and a 
package goes forward to-day, X enolose a few samples so 
that you can see how the type sets up, One or two of your 
sheets that were la duplicate, (oae bearing flowers, the 
other foliage, as ia the oas® of Sobralia Powellii) I have 
labeled and the result is vary satisfactory. I hop® you 
will be able to use the new labels freely and that you 
will be orying for an additional supply before very long. 
I have written to Washington to see if 
a copy of Hidg®way’s Color Standard is obtainable. If it 
is still in print you may b® sure that it will reach you 
vary shortly. 
I am still puzzled by the 3-ongora situ¬ 
ation, Did you ever attempt to set these down in parallel 
columns, placing ia a column under ®aah species the char¬ 
acters that are not found in any of the others? 'fhis method 
is sometimes vary illuminating, fhe results of such a com¬ 
parison woyid be of profound interest at this time when I 
am trying to construct & key to the genus. 
Yours with the best of good wishes, 
G. 
