Yi, i APRIL, 1920 



lijioMOLOGlCAL NEWS 



5c Medical 



Vol XXXI. No. 4 



RTY 

 ^^O?***^ Of- 



Vr.i'Vi ■ ■! O^'. ^ r. J' M L - >OIgTY 



I No 



Asa Fitch 

 1809-1879 



PHILIP P. CALVERT, Ph. D., Editor. 

 E. T. CRESSON. Jr., Associate Editor. 



HENRY SKINNER, M. D., Sc. D., Editor Emeritus. 



Advisory Committee : 



Ezra T. Cresson, J. A. G. Rehn. 



Philip Laurent, H. W. Wenzkl. 



LANCASTER, PA., and PHILADELPHIA. PA. 



Entered at the Lancaster. Pa. , ,Post-Office as Second Class Matter 



Acceptance for mailing at the special rate of postage provided in Section 1103, 



Act of October 3, 1917, authorized on July 19, 1918. 



