UTILIZATION OF GRAPE POMACE AND STEMS. 9 



passing the disintegrated pomace into a sliaking and fanning mill, 

 such as is ordinarily nsed in cleaning grain and seed, or into a rotary 

 separator similar to a sand cleaner, but provided with a quarter-inch 

 mesh, that the seeds may fall through. The seeds are conducted 



Fig. 8. — An apple grater. 



out just as is the gravel in cleaning sand. In either machine, how- 

 ever, about 7 to 10 per cent of the total quantity of seed originally 

 in the pomace is lost. Since the seed contains more than 13 per 

 cent of moisture, it must be dried before storing or shipping ; other- 

 wise it would mold and spoil. In this connection it is of interest 

 30842°— 21 -2 



