29 



have taken place in the climates and waters of the earth, by the gra- 

 dual influences of the precession of the equinoxes and the perihelion 

 position, during the astronomical course under which the sun and 

 earth have been related to each other. 



In the course of the essay, references are made largely to the geo- 

 logical authorities. 



Professor Bache, on behalf of Dr. John Locke of Cincinnati, 

 communicated the results of four magnetic tours in the United 

 States and Territories. Dr. Locke proposes to communicate 

 the details of his observations at a future day. 



The Treasurer submitted his annual account; and Mr. Lea 

 presented the Report of the Publication Committee. 



Dr. Patterson, from the Committee on the erection of an Ob- 

 servatory, and the Committee on the Museum property, re- 

 ported finally; and on his motion, the Committees were dis- 

 charged. 



Stated Meeting, Dec. 15. 



Present twenty-four members. 



Dz'. Bache, Vice-President, in the Chair. 



Letters were received and read: — 



From the Secretary of the Society of Antiquaries, dated 

 London, Nov. 17, 1843, acknowledging the receipt of the 

 Transactions and Proceedings: — and 



From Mr. W. P. Smith, dated Dec. 15, 1843, in reference 

 to certain taxes on the Museum property. 



The letter of Mr. Smith was referred to the Finance Com- 

 mittee, to report thereon. 



The following donations were announced: — 



FOR THE LIBRARY. 



The Medical News and Library. Vol. I. No. 2. December, 1843. 

 Svo. — From Lea <^ Blanchard. 



Introductory Lecture before the Medical Class of the University of 

 Pennsylvania, delivered November 9th, 1843. By W. E. Hor- 

 ner, M.D. Svo. — From the AutJior. 



