Dear Femald: - 
468 Hope Street, 
Providence, E.I. 
15 Oct. 1311 
Although I have heard nothing of you this summer I 
riresume you are hack and hard at work again after another delight¬ 
ful and profitable trip. I only returned to Providence a few 
days ago. 
ily main object in writing you at this particular time is 
to ask^/ou T/ouid be too busy to look over the ms. and illustrations 
of a "Key to the trees" which Preston and I expect to publish soon. 
I a&k this with a great deal of reluctance and hesitation, as I know 
you are a busy man and your time is valuable. There were too many 
errors in the preliminary key (without illustrations) and we are 
anxious to eliminate these so far as it is possible in the forth¬ 
coming one, and we both feel that any criticism that you might be 
inclined to give us would go far towards accomplishing this end. 
The little book is planned on about the same lines as the 
one published two years ago, but has slightly more text, and, we 
hope, lias been considerably improved. 
If you think that you could 3pare a litte time (just as 
little as-you feel inclined to give) to look this over with me, 
and criticise it, I would be glad to take it to Cambridge with 
me within a few days for that purpose. '.7e shall, of course, expect 
to give proper acknowledgement for any help you may extend to us. 
I am afraid you are too busy to spare the time, but I hope you are 
not. 
In any event I hope to see you before long and hear of 
your adventures during the summer. 
Cordially, 
