^ V In K ^V L S 



y ()!•' THE 



NEW YORK ACADEMY OF SCIENCES 



VOLUME IV, 1887+. 



The "Annals," published for over half a century by the Lyceum of 

 Natural History, are coutiuued under the above name by the New York 

 Academy of Sciences, beginning in 1877. Three volumes of the new series 

 have now been issued, each covering three years (1877-9, 1880-2, 1883-5 

 inclusive). 



With the beginning of the present volume, the Academy has decided to 

 change somewhat the mode of publication. The Annals will henceforth be 

 issued vrithout particular reference to times or periods. The parts will 

 appear as material for them shall be offered ; each single part, oi' number^ 

 as before, will contain at least 32 pages, with or wiUiout plates ; twelve 

 numbers, as before, whenever published, will constitute a volume. The 

 size and general character of the parts and volumes will not be changed ; 

 nor is it intended at all to reduce the average yearl}^ amount of matter. 



The Annals will include the more extended and elaborate papers read 

 before the Academy. They will maintain the high standard which has 

 made them, for many years past, one of the prominent scientific publications 

 of the world, and has carried the name of the society literally into every 

 land. The briefer papers and discussions that form part of the Academy's 

 meetings, will appear in its other pubhcation, the Transactions, which it is 

 designed to issue -promptly and regularly, so as to give a record of the cur- 

 rent Avork of each year, — the single numbers appearing monthly (or double, 

 bi-monthly), and eight single numbers forming an annual volume. 



By vote of the Academy, both these publications will be- sent free to its 

 Resident and Honorary members. With the recent increase of annual dues, 

 the Annals, as well as the Transactions, are now to be included therein, 

 instead of being furnished only by subscription. 

 To all others, prices will be as follows : 



Annals, single numbers, One Dollar. 



double or triple numbere in proportion, 

 per volume (12 numbers), - - - Ten Dollars. 

 Transactions, per year, ------ Three Dollars. . 



single numbers, . - - - Fifty Cents. 

 All communications should be addressed to 



Prof. D. S. MARTIN, 

 Chairman Publication Committee, No. 236 We^t 4th Street, 



New York. 

 Or to 

 HENRY DUDLEY, Esq., 



Treasurer, No. 301 East 17th Street. 



The Academy has for sale a number of back numbers of the Annals, of 

 both series, each containing twelve or more numbers ; the price per volume is 

 Five Dollars. 



