STUDY PROGRAM 
159 
Perhaps the physician may be able to show some pathogenic 
germs. 
References: The Story of Germ Life, by H. W. Conn. Chap¬ 
ter I. (35c., postage 6c.) 
Bacteria, Yeasts, and Molds, by H. W. Conn. 
Chapters VIII, IX. ($1.00, postage 10c.) 
The Story of the Bacteria, by T. M. Prudden 
Chapters I, II, III, and IV. (75c., postage 6c.) 
MEETING III 
(Study pages 33-46) 
Molds and Yeasts 
(a) Show a sample of moldy bread, cheese, shoe, mildew 
from clothes. 
(b) Generate carbon dioxide as shown on page 43. 
(c) Examine both yeasts and molds under microscope or 
hand magnifying glass. 
(d) Make a small portion of “milk emptins” as described 
on page 6. Note changes which occur during one 
week. 
(e) Mix some bread dough. Put a part in the ice-chest, 
keep an equal part at about 70° F. and a third at a 
much higher temperature, ioo° F. or over. Compare 
results at the end of six, twelve, and twenty hours. 
(f) Pour boiling water on a small bit of yeast cake and use 
this solution for mixing another portion of dough 
which is to be kept at about 70° F. 
References: Bacteria, Yeasts, and Molds, by H W. Conn. 
Chapter II, pages 12-24, and Chapters III, 
IV, V, and VI. ($1.00, postage 10c.) 
(Select a composite set of answers to Test Questions on Part 
I and send them to the School for correction. Report on 
the supplemental work done and the results of the experi¬ 
ments.) 
