Ixvi 



October 3, 1881. 



Dr. Engelmann in the chair. Eight members present. 



A letter of acknowledgments from Dr. von Hauer, lately elected 

 corresponding member, was read by the Corresponding Sec'y. 



Dr. C. A. Todd presented a specimen of elephant's milk, ob- 

 tained from the elephant mother in Barnum's menagerie, and 

 gave an account of the case, which is the first one of an elephant 

 being born in captivity. At birth the young was 35 inches in 

 height, and now at the age of 20 months is about 57 inches in 

 height. The milk has a strong flavor and odor, much resembling 

 that of the cocoanut. 



Mr. Nipher gave a report on the results of a magnetic survey 

 made during the past summer. 



Wm. H. Markham and C. F. Kirchner were elected associate 

 members. 



October 17, 1881. 



Dr. C. A. Todd in the chair. Six members present. 

 The evening was devoted to business. 



November 7, 1881. 



Dr. Engelmann in the chair. Five members present. 

 Dr. Engelmann i-ead a paper on Isoetes. 



Dr. O. A. Wall and Prof. H. S. Fritchett were elected associ- 

 ate members. 



November 21, 1881. 



Dr. Engelmann in the chair. Twelve members present. 



The Corresponding Secretary read a letter of acknowledgments 

 from Dr. J. Hann, lately elected to corresponding membership. 



Dr. Briggs exhibited specimens of Lithostrotian canadense 

 from the St. Louis limestone. 



Mr. Potter read a note on the results of an examination of spe- 

 cimens of Geyserite from the region of the Yellowstone. The 

 specimens were — No. i, a cauliflower variety; No. 2, a pearly 



