﻿Smithsonian Miscellaneous Collections. 



1037 



Ibobo^ins jfunb. 



METHODS FOR THE DETERMINATION 



OF 



ORGANIC MATTER IN AIR, 



BY 



DAYID HENDRICKS BERGIEY, B.S., M.D., 



Holder of the Thomas A. Scott Fellowship in Hygiene, 1894-'95, Laboratory of Hygiene, 

 University of Pennsylvania, Philadelphia, Pa. 



CITY OF WASHINGTON : 



PUBLISHED BY THE SMITHSONIAN INSTITUTION. 



1896. 



