488 NATURE-STUDY 



Visit a rolling mill, or illustrate with pictures. Discuss these 

 processes. Visit a machine shop. (Connect with study of 

 iron in earth-study above.) 



References: Chemistry: 264, 263, 266, 270, etc. Indus- 

 try and Invention: 316, 317, 318, 322, 287, 288, etc. 



Physiology and Hygiene: Bacteria and disease: See 

 experiments with bacteria in botany below. Infection. 

 Sterilization. Disinfection. Quarantine. Sanitation of home 

 and city. (209, 208, 199, 381a, 372, 373, 368, 375, 387.) 

 Review rules of cleanliness given in physiology, Grade VI. 

 Evils of dust. 



Patent medicines, danger in. Value of medicines. The 

 physician. Dr. Pasteur. Nursing rules. Emergency rules. 

 (368a, 368, 373, 376, 371.) 



The interrelations of food, circulation, respiration, and 

 work. Make simple. Use comparison of the engine. ( 368a, 



373, 368, 37i> 372-) 



General plan of the ear* and eye,* defects and remedies* 

 and hygiene. Compare eye with a camera.* Use simple 

 diagrams, models, etc. The voice.* Care. (368a, 368, 



370, 372, 373, 380, 386.) 



Astronomy : Shadows. See Physics above. Eclipses,* con- 

 ditions. Phases of the moon. Observatories. Stories of 

 astronomers. The story of the calendar. Causes of the sea- 

 sons.* (390,396,402,449,391. Boyle's " Calendar Stories.") 



Autumn 

 Animals. 



Birds: List of the birds that eat grain and fruit, that eat 

 poultry, that eat insects, that eat weed and grass seeds, 

 that destroy field mice, gophers, etc. (120, 108, 117, 33, 34, 



