l6o SCIENCE OF SUCCESSFUL THRESHING. 



vent cracking the grain. The sieves should be set the same as 

 for wheat. In localities in which sufficient buckwheat is 

 grown to keep a separator threshing for several days at a 

 time, excellent results can be obtained by changing the pul- 

 leys on the cylinder-shaft as for rice, thus making a low 

 cylinder speed possible, while the balance of the machine 

 maintains its normal motion. 



Threshing Millet. This is the most easily threshed of 

 the ordinary seeds. Usually the normal cylinder speed and 

 four rows of concave-teeth are sufficient to knock out the 

 seed. The adjustable-sieves will ordinarily clean it suffi- 

 ciently. If the separator be fitted with common sieves, the 

 three-quarter-inch lip-sieve, F, should be used as a chaffer, 

 and either the three-eighths-inch lip-sieve, G, or the fifteen- 

 sixty-fourths-inch round-hole sieve, H, used in the second 

 notch and third hole in the shoe. When a lower sieve is 

 desired with either the adjustable- or common-sieves, the 

 one-eighth-inch round-hole-sieve, O, or the five-thirty- 

 seconds-inch round-hole sieve, I, is suitable. Either should 

 be placed in the seventh notch and fifth hole. 



Threshing Speltz or Emmer. This grain is easily 

 threshed and if the directions for threshing oats be followed, 

 no difficulty will be experienced, . 



