pj^ystcs anb (El^cmistry. 



REMARKS. 



The work during the first four years is entirely a study of "earth 

 forces," pursued as a preparation for geography. Tlie work of the last 

 four years is considered nioi'e in its practical or economic bearings. 



FIRST YEAR. 



WATER: ITS FORMS AND WORK 



(February and March). 



Uses of Watei'. — To man, animals, and plants. Why so useful. 



Evaporation. — Study evaporation from vessel not heated, more rapid 

 disappearance of water from vessel on radiator, and still more rapid 

 evaporation from vessel heated over alcohol stove. Meaning of evapora- 

 tion, and effect of heat on rate of evaporation. Application to drying of 

 wet desk, blackboard, cloth, sponge, sidewalk, roof, clothes, etc. 



Condensation. — Condense with cold object vapor and water-dust from 

 teakettle, and from vessel over radiator. Effect of cold on vapor and 

 water. Illustrate with breath and windows. 



Forms of Water. — Application to explanation of fog, cloud, dew, rain, 

 frost, snow. Make these more than mere forms of water, by bringing in 

 the literature of rain, cloiids, frost, snow, studying the beauty and work 

 of each and personifying them in stories. 



SECOND YEAR. 



WATER. 



As in first year, but more thoroughly (February). 



AIR AND WINDS 



(March). 



Presence of Air. — Demonstrate by experiments with bottles and cans 

 and water. 



Uses of Air. — Show by experiment that air is necessary for burning or 

 combustion. Apply to lamp and stove. Bring out necessity of air for 

 breathing of animals and plants. 



Currents of Air. — Show by experiment how currents of air are pro- 

 duced by heating the air. Application to ventilation. Winds. Explana- 

 tion of winds. Relation between direction of wind and weather. Uses of 

 winds. 



