List of Donations. 609 
DONORS. 
DONATIONS. 
Walter R. Johnson. 
A Memoir of the late Lewis David Von Schweinitz, P.D., with a 
Sketch of his Scientific Labours. Read before the Academy of 
Natural Sciences of Philadelphia, May 12. 1835. 
A Biographical Sketch of the late Thomas Say, Esq. Read before 
the Academy of Natural Sciences of Philadelphia, December 16. 
1834. By Benjamin H. Coates, M. D. 
Tables of Continental, Lineal, and Square Measures. By W.S.B. The Author. 
Woolhouse, Head Assistant of the Nautical Almanac Estabiish- 
The Academy. 
ment. 
