Seed Wheat. 



III. The Grading of Seed-wheat. 



As to the method that should be followed in improving an ordinary sample of wheat for 

 seed purposes, opinions may well vary, there are so many methods that may be adopted. 

 The grower may perform the operation himself, or employ a miller to do it for him ; and 

 whether he does it himself or hires it done, there is a great variety of machines adapted 

 to the purpose, all having their various applications and degrees of merit. The cost of 



Fig. 33. If crank where hand-power is 

 applied; 2, hopper; 3, fan; 4, box 

 to receive coarse material removed 

 by sieve actuated by cams Lear 5 ; 5, 

 aperture through which dust and 

 chaff are blown; 6, pipe or channel 

 which leads the grain to the large 

 revolving cylinder; 7, 8, 9, 10, 11, 

 apertures from which the graded 

 grain is delivered, 7 delivering the 

 smallest grade. The brush for keep- 

 ing the meshes of the cylinder clean 

 is not shown. It will be noticed that 

 the cylinder shows three screens ; 

 . these are of different size in the 

 niesh, and they are easily removable 

 and may be adjusted to widely dif- 

 ferent seeds. 



labour, the distance from nearest flour mill, the price of wheat, and other factors enter 

 into the problem, and render it impossible to suggest a course of action suitable to all 

 cases. It may however be well to call attention to certain points that are of general 

 application. 



It is a well established principle that at a certain point in the cleaning of wheat, a 

 change is desirable in the nature of the machinery employed. Up to the stage at 

 which most of the wheat leaves the farmer's hands for the market it is necessary to 

 use machines having both a blowing and a sifting action, as exemplified in the ordinary 

 winnowing machine. There comes a point soon after this stage, however, beyond which 



