Potatoes 215 



5. Propagation of sweet potatoes. If possible to do so arrange a 

 hot-bed and sprout sweet potatoes as directed in the chapter. If this 

 work cannot be done at the school-house the pupils should, if living in a 

 region where sweet potatoes are an important crop, take part in the 

 work on some farm in the neighborhood. 



Propagate a few sweet potato plants by meams of vine cuttings as 

 directed in the chapter. 



6. Comparison of propagation of white and of sweet potatoes. 

 Place both tubers of white potatoes and roots of sweet potatoes in moist 

 sphagnum moss and keep in a warm, dark place where they will sprout, 

 and study the origin of the sprouts of both. 



REFERENCES 



Bailey, L. H., Cyclopedia of American Agriculture, Vol. II, pp. 519- 



528 ; 613-623. The Macmillan Co. 

 Grubb, Eugene H., and Guilford, W. S., The Potato. Doubleday, 



Page and Co. 

 Pink, J., Potatoes : How to Grow and Show Them. D. Van Nostrand 



Co. 



Gilbert, Arthur W., The Potato. The Macmillan Co. 

 Farmers' Bulletin 533, Good Seed Potatoes and How to Produce Them. 

 Farmers' Bulletin 35, Potato Culture. 



Farmers' Bulletin 91, Potato Diseases and Their Treatment. 

 Farmers' Bulletin 847, Potato Storage and Storage Houses. 

 Farmers' Bulletin 544, Potato-tuber Diseases. 

 Farmers' Bulletin 324, Sweet Potatoes. 

 Farmers' Bulletin 714, Sweet Potato Diseases. 

 Farmers' Bulletin 548, Storing and Marketing Sweet Potatoes. 



