420 



The Principles of Fruit-growing 



FiQ. 185. Combing ^cklng-house an^ storage-house 

 in the Hood River Valley. 



A "medium-priced packing- and storage-house" in 

 the Hood River country is illustrated in Fig. 185 (from 

 Lewis and Brown, Ore. Bull. No. 118). It is provided with 



ventilator and a 

 chute from the 

 upper floors. 



The Alwood 

 storage cellar, 

 in Virginia, is 

 shown in Fig. 

 186: 



The essential 

 features involved in 

 this storage -build- 

 ing are: First, a cellar excavated into a gently sloping hillside, carried 

 into the bank far enough to place the cellar-room entirely below the 

 surface of the earth, and yet give opportunity to enter the cellar easily 

 by an inclined way from the lower side of the slope; secondly, a flue 

 leading out from near the center of the floor of the cellar-room, along 

 the bank of the hillside for a considerable distance, with sufiicient 

 fall to make it act both as a draiu-pipe and a fresh-air flue; thirdly, 

 ventilating flues placed at each end of the cellar-room or elsewhere, 

 as desired, and rising to the height necessary to give a sufficient 

 draft to carry off rapidly the air from the cellar-room whenever 

 ventilation is desired. 



If the air in the cellar becomes warmer than the air in the under- 

 ground flue, it will rise through the ventilating flues, and the colder 

 air will flow in from the supply flue, as desired. The temperature of 

 the cellar-room can thus be approximately controlled to at least the 

 neighborhood of 65° to 60° F. The two ventilators a a rise through 

 the store-room, and are 6 inches in diameter by 15 feet long, thus 

 insuring good draft. The air-flue b enters under the foundation and 

 discharges fresh air into the cellar-room near the center. This flue 

 is 6 inches in diameter, and theoretically should be extended far 

 enough along the hillside to admit of tempering the air to the tem- 

 perature of the surrounding earth while passing through it. The 

 cellar built here has an air-flue only 150 feet long, and we have never 



