1879. J 213 



Library Association, San Francisco ; Ministerio de Fomento, 

 and V. Eeyes of Mexico ; and the R. Academy of History in 

 Madrid. 



The death of Mr. Henry J. Williams, at Philadelphia, on 

 the 12th instant, aged 86, was announced by Mr. J. S. 

 Price. 



On motion, the Hon. M. Russell Thayer was appointed to 

 prepare an obituary notice of the deceased. 



The death of Mr. Jacob B. Knight, at Philadelphia, on the 

 10th instant, aged 48 years, was announced by Mr. Price. 



On motion Dr. Charles B. Dudley, of Altoona, was ap- 

 pointed to prepare an obituary notice of the deceased. 



A communicatien for the Magellanic premium, entitled 

 " Epi- and Hypo-cycloidal Linkages," was presented, and 

 was, on motion placed in charge of Prof. J. P. Lesley, for the 

 examination of members, and for reference to the Board of 

 Officers and Council : accompanying this communication is 

 a sealed envelope, inscribed X. Y. Z. 



Prof. Sadtler presented a paper entitled, " Analysis of a 

 Calculus found in a deer, by Edgar F. Smith," and another 

 entitled " On a new and delicate chemical test for iron : by 

 Edgar F. Smith." 



Mr. Henry Phillips, Jr., read a brief account of the earth- 

 quake which occurred at Aachen (Aix la Cbapelle) on Mon- 

 day, the 26th of August, 1868. 



Dr. Norris exhibited a microphone, in which the grating 

 sound frequently heard was prevented by the pressure of a 

 small spring upon the carbon rod. 



Pending nominations 872, 874, 875, 876, 877, were read. 



Prof. Marks exhibited some pieces of coal representing the 

 theoretical limits of the power of coal, measured by foot 

 pounds and horse power. 



And the meeting was adjourned. 



Analysis of a Calculus found in a Deer. By Edgar F. Smith, Ph.D. 



(Read before the American Philosophical Society, March 21, 1879.) 



This rather interesting specimen was given me by Mr. Hall, student in 

 the Medical Department of the University. It was found by him in the 



