437 
q Stated Meeting, April 5, 1872. 
Present, 21 members. 
Vice-President, Prof. Joun C. Cresson, in the Chair. 
Letters of acknowledgment were reecived from the Royal 
Academy, Lisbon, Feb. 16, 1872 (XT ins 61.82); The 
Royal Institution, London, Feb., 1872 (XIV. iii. 87—XIV. 
ii. wanted); The Anthropological Institute of Great Britain 
t and Ireland, London, March 21, 1872 (XIV. iii. 87); and i 
the New York Lyceum, N. H., March 25, 1872 (XIV. 1040). i) 
Letters of envoy were received from the U.S. Naval Ob- 
servatory, Washington, March 25, 1872, and the New Jer- 
sey Historical Society, Newark, March 30, 1872. 
Donations for the Library were received from the Russian ua 
Geographical Society, the R. Prussian Academy, the R. Bel- 
gian Academy, the Paris Geographical Society and Revue 4 
Politique, the Royal Astronomical Society, Meteorological | 
! Office, and Editors of Nature; the Argentine Astronomical 
Observatory, American Antiquarian Society, Essex Institute, | 
Boston Old and New, American Journal of Science, Ameri- 
can Chemist, Prot. James Hall, New Jersey Geological Sur- 
vey, New Jersey Historical Society, Philadelphia Water 
Department, American Journal of Pharmacy, Gen. Hector 
Tyndale, the Franklin Institute, U. 8. Naval Observatory, 
and Minnesota Historical Society. 
Mr. Sol. W. Roberts, pursuant to appointment, read an 
obituary notice of the late Mr. Edward Miller. 
The death of Mr. Samuel Jackson, on the 4th instant, in 
Philadelphia, aged 85, was announced by Mr. Fraley. | 
The death of Dr. Samuel H. Dickson, on the 31st ult., in ! 
Philadelphia, aged 72, was announced by Mr. Fraley. 
The death of Mr. Elwood Morris, on the 2d inst., aged 59, | 
was announced by Mr. Roberts. 
The death of Prof. 8. F. B. Morse, on the 3d inst., aged hi 
81, was announced by Prof. Cresson. We 
| 
i 
ee 
Mr. T. B. Brooks, State Geologist of Michigan, read a 
paper on “ Magnetism of the Rocks of the Marquette Re- 
