STUD Y PROGRAM \ 59 



Perhaps the physician may be able to show some pathogenic 

 germs. 



References: The Story of Germ Life, by H. W. Conn. Chap- 

 ter I. (350., postage 6c.) 



Bacteria, Yeasts, and Molds, by H. W. Conn. 

 Chapters VIII, IX. ($1.00, postage loc.) 



The Story of the Bacteria, by T. M. Prudden 

 Chapters I, II, III, and IV. (750., postage 6c.) 



MEETING in 



(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, 100 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 loc.) 



(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.) 



