OTHER METHODS OF DRYING 79 



mncK doubt as to whether it would prove satis- 

 factory. 



Drying Under Glass. Another method employed by 

 those who have greenhouses for the winter forcing of 

 vegetables, is to utilize the space under glass during 

 the berry season for this purpose. Fig. 15 is repro- 

 duced from a photograph taken in a forcing -house on 

 the farm of J. W. Corbett, near Watkins, N. Y., in 

 the summer of 1892, and is an excellent illustration of 

 this plan of drying. In this situation the berries 

 usually dry in about three days in bright, warm 

 weather, and are, of course, less liable to injury from 

 storms than outside. The plan is, however, open to 

 the same objection cited in regard to outdoor drying 

 as to flies. It is advisable to have as much air pass- 

 ing through the house as possible, hence the door 

 and ventilators are left open, but by using screen 

 doors and protecting the ventilators with netting, most 

 of the flies might be excluded. 



Drying with Evaporators. For a business of any 

 considerable extent, by far the best way of drying is 

 by means of some good evaporator. There are many 

 different makes of these in market, most of which do 

 good work. The hot air machines were first intro- 

 duced, and are still very largely in use. Later steam 

 came to be used, and many of the large machines are 

 now fitted for steam heating. These being newer, are 

 said to be superior, and if they can be operated in 

 connection with a power plant where the exhaust 

 steam can be utilized,* they undoubtedly possess an 

 advantage. One of the points of superiority for steam 



