a 
for my winter work I had planned to 
determine the Colombian collections of the U. S. National 
Herbarium and of the Sew Yorx Botanical Garden Herbarium. I 
•wanted to do this work in order to get my set of Lehmann ore- 
ids ready for inclusion in my Tin i li m|fii If your papers on the 
Colombian orchids are ready soon, please send them to me at 
your earliest convenience# They will save me the work of 
searching the literature for a list of Colombian species. I 
hope you have included, the numbers of specimens you have ex¬ 
amined in these lists of yours and that you worked on the Leh¬ 
mann collections. 
I have become very muon interested in 
economic plants and products of late. In fact I now have a 
lecture course on the subject in the University* While this 
work consumes much of my time, I am still able to give as much- 
attention as is good for me to the determination of orchids. 
If you can help me in any way to obtain economic plants and 
products you will confer a very groat benefit on an enthusiast. 
Please tell Prof. Diels that I shall be 
ready at any time to receive the duplicates of Hew Guinea orchids 
that were promised in exchange for the Philippine duplicates I 
forwarded several years ago. 
I will bear your suggestion regarding 
the Eeiohenbachian Herbarium in mind. Tour are surely more than 
kind to make such ^generous offer of your valuable time. 
I will send Orohidaoeae VI when it is 
ready for distribution. 
With the best of good wishes. 
a; > i ; 
