

horizontally, of a diameter approximating three feet, and 

 mashed with one-quarter-inch wire, form the drums. These are 

 arranged in rows, and turn on an axis, the end of which pro- 

 trudes from out the kiln, and some bethod of rotation, either 

 by hand or by power is installed. The number of drums depends 

 on the seed requirements, each having a capacity of from three 

 to 0ix bushels, governed by the weight of ttie cones. These 

 are introduced by openings either in the face or side of the 

 machine, and are emptied by lifting the eane covers, the 

 discarded cones being discharged down the seed-hopper. Seed 

 is more readily damaged by high temperature if the air is 

 humid, therefore it is essential to maintain a complete air 

 circulation. IXiring the drying period, the drume are rotated 

 every hour, thus tumbling the seed as soon as it is released, 

 and insuring uniform heating. Too-frequent turnings increase 

 the foreign defcris in the seed by gratinp the cone scales. 



Undoubtedly thoroughly cleaned seed re- 

 tains its germination power better than does untreated seed, 

 but for ordinary general purposes it is quest! ona.ble if the 

 expeno is justifiable once a definite ratio has been established 

 to make allowance for foreign matter in apportioning the quan- 

 tities for seeding. The wings are removed by sprinkling and 

 drying, or by passing the seed in a fine wire cylinder, 

 inner surface of which is rubbed by rotating brushes. 



