4:21 



SOUTH EBN FIELD CROPS 



months, spread out on the ground for the purpose of favor- 

 ing the separation of the filler from the adhering materials. 



Fio. 187. — Shocking Hemp. 



When exposure to alternate freezing and thamng has ef- 

 fected its end, the hemp is again shocked. 



The fiber is separated on the farm chiefly by the old 

 device, called the hand-brake. In some regions this work 

 is performed by machinery. 



LABORATORY EXERCISES 



In regions where liemp is ncjt grown, it is scarcely profitable 

 to si^end a laboratory period on dried specimens and on the litera- 

 ture of this crop. Instead, this laboratory period may well be 

 devoted to some re\'ie\v or additional exercise relati^'e to the 

 principal crop of the region where the school is located. 



LlTEUATUliE 



BoYcio. Hemp. New York, 1900. 



Dewey, L. H. The Fiber Industries in the United States. U. S. 



Dept. Agr. Yearbook, 1901, pp. 541-544. 

 Harper, .T. N. TIom)i. Bailey's Cyelo. Agr., Vol. II, pp. 377- 



380. 

 Hunt, T. F. The Forage and Fiber Crops in America, pp. 394- 



397. New York, 1907. 



