114 THE NATURE STUDY COURSE. 



room than in an unventilated one. The author of a treatise 

 on ventilation 1 says children can learn six times as much in 

 pure air as in a crowded unventilated room. 



Ontario. Form IV. (Part of 6lh Year and 7th Year.) Nature 

 Study. — Course of Form III continued. Animal. Life. — Relation of 

 fish, birds, and wild animals to man ; life histories of conspicuous and 

 economic insects ; organs and functions. 



Plant Life. — Study of organs of plants and their functions ; study 

 of economic and wild plants from seed to fruit in the school-garden, 

 home-garden, farm and forest ; weeds injurious to crops and methods 

 of destroying them ; buds and twigs ; wood, rings, grain and bark, 

 uses, etc. 



Inanimate Nature. — Observing local minerals and rocks, their 

 properties and uses ; experiments to show composition of soils and 

 their relation to drainage, temperature, etc ; varieties of soils adapted 

 to different crops ; fertilizers, etc. Implements and tools used on the 

 farm and in the household, mechanical principles applied in their 

 construction. 



The atmosphere ; its composition ; combustion, simple experiments, 

 study of candle flame products ; changes produced in the air by 

 respiration ; reciprocal relation of plants and animals as regards the 

 atmosphere ; impurities in air. 



Physics. — Gravity; air and liquid pressure, the barometer. Cohesion 

 and adhesion, the nature of these forces ; phenomenon of solution and 

 diffusion ; amorphous and crystalline forms of matter. Practical use of 

 heat, steam and electricity in connection with the study of industries. 



In Geography the observational work of Form III is continued. 

 Observations of the more prominent star constellations and the evening 

 planets. Weather observations. 



In Physiology.— Bones and muscles ; circulation and respiration ; 

 ventilation ; exercise ; hygiene of the vocal organs and nervous 

 system. Narcotics and stimulants. 



In Art. — Course in Form III continued. 



» " Ventilation of School Buildings," Morrison, p. 23. 



