3. Mechanical by means ^ 



SCHOOL COURSES. 49 



Mechanical analyses may 

 be made by means of sieves 

 (2 millimetre)f or the rougher 

 particles, and by sedimenta- 



tion in water for the finer. 



But exact experimentation 

 of this kind is rather outside 

 the limits of the elementary 

 school course. 



(c) Identification of Commoner Mineral Constituents ; 



Quartz, Mica, 



Felspar, Sandstone, 



Limestone, etc. 



Study of their distinctive characteristics (see p. 282). 

 Name the rocks of your own district. 



PLANT STUDIES : 



Lessons on Evergreens, e.g. Spruce Tree, Holly, Snow- 

 drops, Christmas Roses, Mistletoe. 



WEATHER STUDIES : 



Continue the work prescribed for the other seasons of 

 the year. Incidentally, Snow Crystals should be studied 

 and from these the transition to a study of Crystals in 

 general may be made. See p. 64. 



STAR STUDIES : 







Indoors the teacher should figure the constellations 

 most readily observable at the time of study and pupils 

 should be encouraged to identify these at night. As an 

 aid to teachers, Philip's "Planisphere" will be found of 

 value. 



N. s. 4 



