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 

 hrmanufacturing 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; forms 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. 



