Copyright by Harris and Ewing. 



Peofessoe Chaeles F. Maevin, 



Professor of Meteorology in the U. S. Weather Bureau since 1891, Chief of the 



Instrument Division, appointed Chief of the Weather Bureau, to succeed 



Mr. Willis L. Moore. Mr. Marvin is here photographed with the 



barograph, which is among the important meteorological 



instruments which he has invented. 



