636 



Other donations for the library were received from the 

 Academy and Observatory at St. Petersburg; the Prussian 

 Academy ; German Geol. Society; Austrian Academy, and 

 Zoo. Bot. Society ; the Frankfurt ZooL G-arden; the Physical 

 Societies at Geneva and Bordeaux ; Geographical Society ; 

 Anthropolog. Society, Annales des Mines, and Pevue Poli- 

 tique at Paris ; the P. Inst, of Luxembourg ; the Belgian 

 Academy and Observatory ; the Congres Internationale de 

 Statistique ; the Poyal, P. A.stro., and R. Geog. Societies at 

 London ; N'ature ; American Academy at Boston ; Silli- 

 man's Journal ; American Chemist ; Mr. Josiah P. Cooke of 

 Boston ; the Medical News ; Journal of Pharmacy ; Penn 

 Monthly, and Water Department of Philadelphia ; the Com- 

 missioners of the Second Geological Survey of Pa., Harris- 

 burg ; the I] nited States Engineer Department ; Coast Sur- 

 vey; Peabody Institute, Baltimore; and the Zoological 

 Society, Philadelphia, 



On motion, Mr. Roberts asked to be relieved from the duty 

 of preparing an obituary notice of the late member, Mr. 

 John Henry Towne, and that Prof. Lesley be substituted in 

 his place ; which, on motion, was so ordered. 



A communication " on the Geological relations of the 

 Lignitic Groups," by J. J. Stevenson, was read by the Sec- 

 retary. 



Prof. Cope read a communication on an exploration of 

 Architectural Remains on and near the Eocene Plateau of 

 JSTorthwestern New Mexico. 



Dr. Genth communicated the corrections of an error in 

 his recent paper On Tellurian Minerals, and announced some 

 novel and interesting indications recently found by him in 

 some of the minerals there described. 



Dr. Cresson read a communication on the influence of 

 magnetic forces upon iron and steel under strain. 



Prot. Chase made some remarks in continuation of the 

 subject of Dr. Cresson's paper. 



Dr. Cresson offered the following resolution which was 

 unanimously adopted. 



