s 



Vol. II. APRIL and MAY, 1883. Nos. 7-8. 



PRICE OF THE TRANSACTIONS. 



To residents of the City of New York, not members of the Academy, $5.00 

 per annum. To non-resident?, $300 per annum, 40 cents per number. To resi- 

 dent and honorary members, tliey are free ; extra copies, 30 cents per number. 



TRANSACTIONS 



NewYork Academy of Sciences. 



1882-3 



Editor, 



ALEXIS A. JULIEN, 



Sc/ioo/ of Mines, Columbia College, N. Y. City. 



PUBLISHED FOR J'HE ACADEMY, 

 In Eight Monthly Numbers, from October to May, inclusive. 



