16 

 DECEMBEE. 



PLANTS. 



Effect of frost upon twigs, buds, and seeds. 



ANIMALS. 



Compare development of limbs in quadrupeds and bi- 

 peds; position of body in each; use of upper limbs. Com- 

 pare squirrel and rabbit with cat and dog. 



MINERALS. 



Effect of thawing and freezing upon roots of plants. 

 Power of granite, limestone, sandstone, coal, sand, clay, 

 iron ore, copper ore to absorb and retain moisture. 



ELBMENTABT GEOGRAPHY. 



Increased or decreased cloudiness, rainfall; wind more or 

 less variable; wind preceding rain or accompanying clear- 

 ing weather. 



Relation of Une showing apparent paths of sun since 

 September. Winter solstice. 



NOTE.— Pupils should have definite idea as to rising and set- 

 ting of sun, its position at noon in December. From personal 

 observation difference between animal and plant life of June and 

 December carefully noted. 



Development of most parts of animal organism is for the pur- 

 pose of securing food. Erect position of body is proportioned to 

 development of fore-legs as prehensile organs. 



The work on minerals is for the purpose of showing the value 

 of each for building purposes. Weigh in air, immerse in water 

 and weigh again while wet. Difference in weight shows ab- 

 sorptive power. Effect of frost— cracking rock. 



JANUARY. 



PLANTS. 



Dormant condition of plants. 



