190 NATURE STUDY 



PRESCRIBED. Each member of the class is to select an experiment or a 

 lesson on some plant or animal which he is to present to the 

 class, using his own apparatus or material that he himself has 

 prepared. 



Eighth Grade. 



PRESCRIBED. 

 BIRDS. Part of the work, if not all, given in the notes. 



CAPILLARY ATTRACTION. Illustration of capillary attraction by means 

 of set of tubes, sheets of glass, a sponge, cloth, lump of sugar, 

 etc. 



Capillary attraction in gravel, sand, clay. 



Application to plant life in California. 



Reason for cultivation of orchards. 

 SOILS. Structure. 



Kinds of soil. 



Relation of soil to growing roots. 



Relation of soil to percolating water. 

 PRESSURE of liquids and air. 



Why bodies float. 



Why some bodies float more above the water than others. 



Why some bodies sink. 



Effect of some floating bodies in lighter or heavier liquids. 



Application to ventilation and winds. 



Construction and use of barometer. 

 CURRENTS in water. 



Currents in boiling water\ 



Currents in vessels of different shapes. 



Effect of unequal heating on currents. 

 CURRENTS in air. 



Exploration of schoolroom for currents of air. 



Construction of hot air balloon. 



Application to winds and to ventilation. 



ELECTIVE. 

 SELECT one subject from any outside source. 



