FORAGE PLANTS OF THE FAMILY LEGUMINOS^ 217 



GRIFFITHS, DAVID: The Prickly Pear and other Cacti as Food for Stock. Bulletin 74, 

 Bureau of Plant Industry, U. S. Department of Agriculture, 1905; The Prickly 

 Pear as a Farm Crop. Bulletin 124, Bureau of Plant Industry. 



KENNEDY, P. BEVERIDGE: Salt Bushes. Farmers' Bulletin 108, U. S. Department of 

 Agriculture, 1900. 



LAMSON-SCRIBNER, F.: Southern Forage Plants. Farmers' Bulletin 102, 1899. 



McKEE, ROLAND: Australian Salt Bush. Bulletin 617, U. S. Department of Agri- 

 culture, 1919. 



PIPER, CHARLES V. : Forage Plants and Their Culture. New York, The MacMillan 

 Company, 1914. 



WOOTON, E. O.: Certain Desert Plants as Emergency Stock Feed. Bulletin 728, U. S. 

 Department of Agriculture, 1918. 



LABORATORY WORK 



Suggestion to Teachers. The suggestions that have been made for the provision 

 of alcoholic, dried and living material for the prosecution of the laboratory work con- 

 nected with this chapter holds good. The teacher should provide dried plants of alfalfa, 

 red clover, crimson clover, alsike clover, white clover, sweet clover, cowpeas, soy- 

 beans and peanuts for a detailed study by the class. Fresh peanuts can always be 

 had during the winter months. If The institution is provided with greenhouse facilities 

 some of the clovers can be transplanted to flats in the greenhouses during the summer, 

 while cowpeas, soy-beans and peanuts are easily grown in pots, especially the plants 

 which in the absence of a greenhouse can be grown to the development of mature 

 fruits in a warm sunny window of an ordinarily heated house. Dried specimens of 

 the fruits and seeds of each of these plants and of the rarer kinds should be kept for 

 class demonstration. Charts, maps of distribution, book illustrations, lantern slides 

 and moving picture films of field operations should be collected by the larger and 

 better endowed institutions. There can be no limit to the different plants used in 

 connection with the subject matter of this chapter in any part of the world. The 

 abundant plants of the locality should be utilized. 



LABORATORY EXERCISES 



1. Draw and describe the alfalfa plants, or any of the above mentioned plants, 

 in all of their parts and make floral diagrams and dissections of the seeds of these 

 important plants. 



2. A similar study should be made of the red clover, crimson clover, white clover, 

 cowpea, soy-bean and peanut, or any available leguminous crop plant. All of them, if 

 time permits. 



3. Study in detail the fruits and seeds of alfalfa, red clover and peanut, etc. Sec- 

 tions of swollen seeds should be treated with iodine solution and other reagents, as 

 time permits. 



4. The members of the class should be instructed to plant unroasted peanuts in 

 pots at home, as the growth of the plant can be watched with great interest and in- 

 struction to the students, who undertake to do this. 



