355 Commonwealth Avenue, Boston, Mar 3 . 
April 5th, 1922. 
My dear Mr. Powell: 
The specimens arrived last evening. They 
look very professional, and you are to be congratulated. I 
only have one criticism to offer. The strips are a bit wide 
and sometimes too long. For the stems,strips l/8 of an inch 
wide will do very well. Good results are obtained by using 
very narrow strips (l/l6 in.) across pedicels and flowers. 
In other words, we try to make the strips as inoonspicuous as 
possible. The plaster, by the way, is very strong. 
The mosses and two orchid^ specimens came 
this morning. I will obtain the names for the mosses at the 
earliest possible time. I must submit them to one of our best 
authorities, as I am not sufficiently well drilled in moss 
identification to give you names that you could trust. 
I have added the speuinens to your set 
and they make a very strong addition. Please do not get weary 
of this good work! 
I am sending to you to-day the seventh 
volume of Orchidaoeae. I hope this will be of interest and 
serve to keep you informed of my good will toward you. pp. 
127 to 128 should be of Importance> also the article on iSry- 
throdes, beginning on page 63. 
With the best of good wishes. 
Yours faithfully. 
