The Academy of Natural Sciences of Philadelphia. 



AprH 10, 1919. 



I hereby certify that printed copies of the Proceedings for 1918 were 

 mailed as follows: 



Pages 1-64 April 11, 1918 



65-96 May 28,1918 



97-112 May 30,1918 



113-138 July 19,1918 



139-186 September 6, 1918 



187-234 October 2, 1918 



235-280 '. December 4, 1918 



281-328 February 21, 1919 



329-360 April 10, 1919 



EDWARD J. NOLAN, 



Recording Secretary. 



PUBLICATION committee: 



Henry Skinner, M.D., Sc.D., Witmer Stone, A.M., Sc.D., 



Henry A. Pilsbry, Sc.D., William J. Fox, 



Edward J. Nolan, M.D., Sc.D. 



The President, J OKN Cadwalader, A.M., LL.D., ex-officio. 



EDITOR: Edward J. Nolan, M.D., Sc.D. 



