STUDY PROGRAM 161 
Bacteria, Yeasts, and Molds, by H. W. Conn. 
Chapters XIV, XV. ($1.00, postage ioc.) 
Our Secret Friends and Foes, by Percy F. 
Frankland, Chapter VI. ($i. 25, postage 12c.) 
The Story of the Bacteria, bj' T. M. Prudden. 
Chapters V-XIII. (75c., postage 6c.) 
MEETING VI 
(Study pages 96-116) 
Household Applications 
(a) Make out a list on paper of the most common and most 
harmful dust gardens occurring in the household —- 
the dishcloth, refrigerator, waste-pipe, damp floor- 
mop, or any cloths put away in dark closets, uncleaned 
bread boxes, etc. 
(b) Expose small portions of bread, cheese, sauces, meat, 
milk to dusty air. Keep in warm, dark places and 
note time, character, appearance of changes. 
(c) Consider the care of hands, teeth, all parts of the body; 
house, sidewalks, backyard, garbage barrels, etc., from 
bacteriological standpoint. 
References: Dust and Its Dangers, by T. M. Prudden. 
Chapters V, IX, XI, XII. (75c., postage 6c.) 
Bacteria, Yeasts* and Molds, by H. W. Conn. 
Chapter II, pages 24-31; Chapters VII, XIV. 
($1.00, postage ioc.) 
Water and Ice, by T. M. Prudden. (75c., 
/ postage 6c.) 
(Select answers to Test Questions on Part II. Report on 
supplemental work and experiments.) 
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