NEMATODE GALLS IN MARKET WHEAT, | 9 
. 
wheat, or as foreign material other than dockage if they can not be 
removed in the determination of dockage. 
Fic. 7.—A, Smut balls; B; nematode galls; C0, wheat containing smut, corn 
cockle, bin-burned wheat, and nematode galls; D, bin-burned wheat; #, corn 
cockle. 
_ The estimation of the foreign material in wheat is generally made 
in ene of two ways.’ It may be made by means of sieves such as 
*U. S. Dept. of Agriculture, Farmers’ Bulletin 919. The application of dockage in 
the marketing of wheat. 1917. 
