30 



MINERALS. 



Study quartz crystals; form, size, color, hardness, tex- 

 ture, varieties. 



ELBMBNTABT GEOGRAPHY. 



Compare snow line with December; when farthest north; 

 farthest south; range of latitude covered; influence of 

 Great Lakes. 



Compare marks on shadow stick with previous months; 

 effect upon temperature. 



NOTE.— Relate effect of frost upon plants, scarcity of food of 

 animals, the southern limit of snow line, the length of shadow to 

 movement of sun. 



Examine snow ciystals. Note form, size, and law of crystal- 

 lization. 



Saturate solution of salt, alum, chalk, soda, blue vitriol, cop- 

 peras, bichromate of potash. Note temperature of water in solu- 

 tion. Place solution in shallow dish or bottle with a string sus- 

 pended in it. Evaporate rapidly; slowly. Relate solution to 

 erosion of rocks; crystallization to crystalline rock, quartz- 

 crystals, geodes, etc. 



FEBRUARY. 



PLANTS. 



. Any awakening in plant life. Observe trees for mosses. 



ANIMALS. 



Any appearance of animal life. 



MINERALS. 



Distinguish different species of quartz. Relate hardness 

 of granite to quartz. Association of quartz with other min- 

 erals. 



ELEMENTARY GEOGRAPHY. 



Compare snow line and zero isotherm with January. In- 

 fluence of wind upon course of storm. 



