MAN'S IMPROVEMENT OF HIS ENVIRONMENT 397 



Richards, Sanitation in Daily Life. Whitcomb and Barrows. 



Richmond and Wallach, Good Citizenship. American Book Company. 



Ritchie, Primer of Sanitation. World Book Company. 



Sharpe, Laboratory Manual of Biology, pages 320-334. American Book Company. 



ADVANCED 



Allen, Civics and Health. Ginn and Company. 



Chapin, Municipal Sanitation in the United States. Snow and Farnham. 



Chapin, Sources and Modes of Infection. Wiley and Sons. 



Conn, Practical Dairy Bacteriology. Orange Judd Company. 



Hough and Sedgwick, The Human Mechanism. Part II. Ginn and Company. 



Hutchinson, Preventable Diseases. The Houghton, Mifflin Company. 



Morse, The Collection and Disposal of Municipal Waste. Municipal Journal and 



Engineer. 

 Overlock, The Working People, Their Health and How to Protect It. Mass. Health 



Book Publishing Co. 



Price, Handbook of Sanitation. Wiley and Sons. 

 Tolman, Hygiene for the Worker. American Book Company. 



REPORTS, ETC. 



American Health Magazine. 



Annual Report of Department of Health, City of New York (and other cities). 



Bulletins and Publications of Committee of One Hundred on National Health. 



School Hygiene, American School Hygiene Association. 



Grinnell, Our Army versus a Bacillus. National Geographic Magazine. 



