2l8 DAVENPOR1 ACADEMY OF NATURAL SCIENC] 



of Iowa, including the Building Stone of Iowa, including mention of 

 Gypsum, Sand, Clay, and the Ochre from which Mineral Paint is made; 

 Mathematics of Plants; Migration of Plants; Protective Mimicry of 

 Animals: Protective Colors of Animals \ < )rigin of Our Domestic Ani- 

 mals; Migration of Birds; Aerial Navigation; Explosives; Glycerine; 

 Gutta Percha; Phosphorescence; Petroleum, its Manufacture and Uses; 

 Electricity as a Motive Power; Meteoric Stones; Pottery." 



Report adopted, and voted that this list, to which any subject pro- 

 posed and approved at any meeting may be added, be kept by the 

 Secretary, accessible to members. 



A discussion then ensued on "Railroad Telegraphy." The subject 

 of "Electric Motors for Street Cars" was also discussed. 



February 26, 1886. — REGULAR MEETING. 



President C. E. Putnam in the chair; twenty-two members present. 



Curator reported the receipt of three boxes of pottery from ancient 

 mounds. 



Mrs. Putnam reported the proceeds of the entertainment on the 22d 

 of Eebruary, $42.00. 



Dr. Barris read a review of a pamphlet on the "Geology of Scott 

 County, Iowa, and Rock Island County, Illinois," by A. S. Tiffany, 

 which was referred to the Publication Committee. 



Prof. R. E. Call read by title, and gave a synopsis of a paper on 

 "New Fresh Water Mollusks." 



H. A. Pilsbry and R. E. Call offered a paper on "Pyrgulopsis," a 

 new genus of mollusk, with descriptions of two new species. Both 

 papers were referred to the Publication Committee. 



Prof. Call, as a new member, greeted the Academy, and congratulated 

 the members on the value of its work and the worth of the appreciation 

 it is receiving from all parts of the world. 



MarcJi s8, 1886. — Trustees 1 Meeting. 



President C. E. Putnam in the chair; eleven members present. 



On motion, the Finance Committee was authorized to make a tem- 

 porary loan of $100, to pay the balance due for completion and distri- 

 bution of Volume IV. of the Proceedings. 



On motion, the Publication Committee was authorized to proceed 

 with the publication of Volume V. 



Mr. Putnam read a communication signed by himself and Mrs. Put- 

 nam, in regard to the entomological collection of their son, the late 



