PHILOSOPHICAL SOCIETY OF WASHINGTON, 45 



1G6TH Meeting. October 11, 1819. 



The President in the Chair 

 Thirty-eight members and visitors present. 

 Mr. S. Neavcomb communicated remarks on 



A RECENT visit TO CALIFORNIA TO INSPECT A SITE FOR THE NEW 

 LICK OBSERVATORY. 



A discussion followed, which was participated in by Messrs. 

 Alvord, Holden, and Gale. 



Mr. W. H. Dall made a communication on 

 the deep sea dredgings in the gulf of MEXICO and the west 



INDIES in 1813-1818, BY professors LOUIS AND ALEXANDER 

 AGASSIZ AND THE OFFICERS OF THE U. S. COAST SURVEY. 



Remarks were made by Messrs. Gill, Taylor, and Ward. 

 Mr. E. B. Elliott made a communication on 



LARGE AREA ILLUMINATION BY ELECTRICITY. 



The meeting then adjourned. 



161th Meeting. October 25, 1819. 



The President in the Chair, 



Thirty-seven members and visitors present. 



The minutes of the last meeting were read and adopted. 



The President announced to the Society the election of 

 William Francis Pitter and Lieut. Frederick Collins, 

 TJ. S. Navy, as members of the Society; also the resignation of 

 Commander George Dewey, TJ. S. Navy. 



Mr. C. A. ScHOTT made a communication on 



THE secular change IN THE MAGNETIC DECLINATION IN THE 

 UNITED STATES AND AT SOME FOREIGN STATIONS. 



