NATURE-STUDY LESSONS. 149 



31. {a) How has man modified rivers in certain places 

 to serve his purposes ? 

 (J)) What industries are assisted by the currents 

 of rivers? 



XL.-A SCHOOL GAEDEN. 



A school garden may be made of any convenient or 

 suitable size. 



It may be situated in a part of the school grounds or 

 it may be a plot bought or rented outside of the school 

 site, but convenient to it. 



Whether in or outside the school site proper it should 

 be fenced or protected from careless or accidental inva- 

 sion. 



It may be separated into different plots for each class 

 if there is enough land, in which case the older pupils 

 will undertake more difficult problems than the juniors. 

 If the space be only a square rod or two the pupils will 

 all have to work together. 



School gardens will and should be different in different 

 school sections, and will in the same section vary to 

 some extent, especially in the plots devoted to annuals, 

 from year to year. 



Training vines over the porch, woodshed or summer 

 house, planting ornamental trees and shrubs in suitable 

 places around the grounds, cultivating flower plots near 

 the front door or flower borders along the walks, are to 

 be considered as part of the work of school-gardening. 



Some of the practical problems that may be attempted 

 to be studied by the aid of the garden, are : 



(a) Cultivation, fertilization and drainage of the soil. 



(J?) Weeds and weeding. 



