1885.] NEW YORK ACADEMY OF SCIENCES. T9 



He referred the beds, which are greatly contorted and faulted, 

 to the Post Pliocene or Quaternary. 



Dr. N. L. Britton remarked on the Serpentines of the vicin- 

 ity and exhibited specimens from the different localities. He 

 called attention to the view held by Messrs. Whitney and 

 Wadsworth (Bull. Mus. Comp. Zool., Cambridge (vol. vii., p. 465) 

 that the Staten Island Serpentine was the result of the altera- 

 tion of an igneous rock, whereas all the Serpentines of the 

 neighborhood are plainly but the alteration of stratified Archae- 

 an rocks, mainly limestones and tremolitic schists. 



The subject was discussed by the President, who agreed 

 with the speaker. 



May 18th, 1885. 

 Stated Meeting. 

 The President, Dr. J. S. Newberry, in the chair. 



A large audience assembled in the east lecture room of the 

 Library Building, Columbia College. 



The fourth lecture of the Popular Lecture Course was deliv- 

 ered by Prof. Daniel C. Eaton, subject, 

 hybrids and hybridism. 



May 25tli, 1885. 

 Stated Meeting. 

 The President, Dr. J. S. Newberry, in the chair. 

 Ten persons present. 

 Mr. W. E. Hidden remarked on 



HANKSITE, a new anhydrous SUPHATO-CARBONATE from SAN BER- 

 NARDINO COUNTY, CALIFORNIA. 



(For description and analyses see Annals, vol. iii., pp. 228-241.) 



