BACTERIA, YEASTS, AND MOLDS 

 IN THE HOME 



BY 



»;'Wj'CONN, Ph.D. 



Professor of Biology in Wesleyan University, Middletown, Conn 



Author of "Agricultural Bacteriology," " Bactkria in 



Milk and its Products," "The Storv of Germ 



Life," "The Method of Evolution," etc. 



REVISED EDITION 



GINN AND COMPANY 



BOSTON • NEW YORK • CHICAGO • LONDON 



