ELEMENTARY AGRICULTURE FOR SCHOOLS 157 



Propagation by grafting: making of an apple tree; 

 apple culture in a region where apple raising is one of the 

 chief industries; compare pear culture. 



Oats: seed testing, method of culture, varieties, etc. 



Legumes : red clover, alfalfa, etc. ; other forage plants. 



Potato culture with experiments: this should be em- 

 phasized where potatoes form one of the staple crops. 



Insects in connection with plants studied, such as 

 codling moth, cankerworm, bumblebee, potato beetle. 



Eighth Grade — Fall Term 



Plant products with experiments: simple experiments 

 in the elements of soil chemistry; elements used by plants 

 in manufacturing food products; compounds found in soil; 

 use of fertilizers. 



Origin of soil. 



Eighth Grade — Winter Term 



Simple experiments in soil physics; porosity and capil- 

 larity; power to hold water; fotms in which water exists in 

 the soil ; air in the soil, etc. 



Farm animals with methods of feeding, housing, etc. 



Eighth Grade — Spring Term 



Relation of plants to soil, air, and water with experi- 

 ments. 



Work of plants in. manufacturing, digesting, and storing 

 food. 



Method of retaining the fertility of the soil. 



Earthworm in relation to soil. 



