424. [March 7, 
and the President requested to appoint a member to prepare 
an obituary notice of the deceased. 
An obituary notice of Dr. Robert Bridges was read by Dr. 
Ruschenberger. 
Mr. Blodget described the transfer of certain manufacturing 
industries from England to Philadelphia. 
Sections of the Anthracite Coal Measures, recently executed 
by the Geological Survey of the State, were exhibited. 
Dr. Frazer exhibited copies of prehistoric hieroglyphs, 
found in the Puerco San Antonio, Coahuila, Mexico, 25 8. E. 
of Coahuila, not previously described, sharply cut. Also, his 
discovery of a granite sacrificial stone, of great weight and 
age, lying sixty or seventy miles distant from any rock of that 
kind in the region. Size, 5’, 6” by 3’, and 4’ high; shape pe- 
culiarly curved; edges full of fine sharp serrations; weight at 
least five and a half net tons. A natural ravine cut in the stone 
would allow the blood to flow off without overflowing the 
stone. The locality isa narrow mountain pass, which has a 
history both ancient and modern. 
The minutes of the last meeting of the Board of Officers 
were read and their consideration postponed, 
The Committee on Aztec MSS. reported progress. 
Stated Meeting, March 7, 1884. 
Present, 12 members. 
Vice-President, Hii K. Pricn, in the Chair. 
Mr. Lehman, Mr. Isaac Burk and Professor Pancoast were 
introduced to the presiding officer, and took their seats. 
Acceptance of membership was reported from Dr, Ellerslie 
Wallace, Dr. J. Solis Cohen and Lord Coleridge. 
Letters of acknowledgment were received from Le Minis- 
tere des travaux publics (Annales des Mines), February 4 
