VI 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 Nmth America and the West Indies. 



In order to make the work more valuable to the collector, and especially 

 to the beginner, I have introduced 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. 



I shall be very thankful to have defects and omissions pointed out, 

 that in a possible future edition the Catalogue may be perfected. 



White Plains, 

 April, 1874. 



