iv PREFACE. 
The Botanical Directory is a part of the one published by the Torrey 
Botanical Club, and includes the address of most of the living Botanists 
in North America and the West Indies. 
_ In order to make the work more valuable to the collector, and especially 
to the beginner, I have introdueed an article on the collecting, pressing, 
and preserving of Botanical specimens, with a description of suitable ap- 
paratus, and suggestions to teachers pursuing the study of Botany. 
This Catalogue will fall into the hands of men who can form a just 
estimate of the difficulties and labor incident to the preparation of a work 
like this ; consequently, I expect it to be judged with lenity and criticised 
with charity. 

[ shall be very thankful to have defects and omissions pointed out, 
that in a possible future edition the Catalogue may be perfected. 
Wuitr Puars, 
April, 1874. | 


