1862.] 27 



duration of life, found by multiplying the various ages of the dying 

 by their numbers respectively, and dividing the sum of the products 

 by the whole population, is 23 years, in Philadelphia. Excluding 

 those who die under one year, and who may be said not to have the 

 stamina to begin the race of life, the average duration is 301 years. 

 This small allotment, it is scarcely necessary to observe, arises from 

 the large proportion of deaths under the age of five years; nearly one- 

 half of the entire sum. 



Pendino; nominations Nos. 446 to 455 and new nomina- 

 tions Nos. 456 and 457 Avere read. 



Nominations Nos. 446 to 455 were ballotted for, and there 

 being no other business before the Society, the ballot boxes 

 were examined, and the following persons were declared by 

 the presiding officer to have been duly elected members of the 

 Society: 



Professor F. L. Otto Rcehrig, of Philadelphia. 



Lieutenant H. L. Abbot, Corps of Topographical Engi- 

 neers, United States Army. 



Professor Oswald Heer, of Zurich, Switzerland. 



Professor John Lindley, of London, F.R.S. 



Professor JoiiANN Liebig, of Munich, Bavaria. 



Professor Friedrich Wohler, of G()ttingen, Germany. 



Professor J. W. Dawson, of Montreal, Canada. 



Captain Samuel F. Dupont, of the United States Navy. 



Dr. George Englemann, of St. Louis, Missouri. 



William S. Sullivant, Esq., of Columbus, Ohio. 

 And the Society was adjourned. 



Stated Meeting, May 2, 1862. 



Present, seventeen members. 



Vice-President, Judge Sharswood, in the Chair. 



Letters accepting membership, were received from Profes- 

 sor J. W. Dawson, of Montreal, dated April 23, 1862, and 

 H. L. Abbot, Lieutenant United States Army, Topographi- 

 cal Engineers, dated Camp Winfield Scott, April 24, 1862. 



