INTRODUCTION. 



In this part of the "Naturalists' Directory" the addresses of the 

 various persons given in the first part, with such additional ones as 

 have been received, are arranged under the several departments in 

 which the Naturalists are engaged. 



For the benefit of those who wish to keep their alphabetic list com- 

 plete, the new names and those on the old list which were not correct- 

 ly given, are designated by asterisks before the names. This mark is 

 also applied where a change in the address, or department of study, 

 &c., has taken place. 



The number preceding each name is given to facilitate indexing. 



This part will be issued with the "Proceedings," several pages at a 

 time, as fast as it can be prepared. 



The Editor returns his thanks to the numerous friends who have 

 aided him, since the publication of the first part, by sending new names 

 and corrections, and earnestly hopes that his attention may be call- 

 ed to any mistakes noticed in the present part, at as early a day as 

 possible. 



Information respecting Naturalists residing in the Southern States 

 is especially requested, as but few replies have been received to the 

 circulars sent to them. 



Those persons who have not answered the circulars forwarded to them 

 are requested to do so, even if their addresses are correctly given, as it 

 is only from the personal statement of each that perfect confidence can 

 be had in the printed list. In regard to this subject, the Editor would 

 state that answers have been received to nearly all the circulars issued, 

 with the exception of those sent to the Southern States and Mexico. 

 The addresses which are left doubtful from the lion receipt of answers, 

 will be designated in the index. 



Notices of the decease, or change of address, of persons whose 

 names appear in the Directory are particularly desired. 



F. W. PUTNAM, 



Editor. 



ESSEX INSTITUTE, SALEM, MASS., 

 Oct. 1, 1805. 



