FRUIT STORAGE 137 



tions being at most 2". Outside temperature varied 

 considerably, but tbe range was between 15" and 46°. 

 A number of observations were made on the working 

 of tbe supply flue and the ventilators. The tests 

 made showed that air passed through the 150-foot 

 supply flue in thirty to forty seconds, and the ven- 

 tilators could be depended upon at all times to keep 

 up a movement of air in the cellar so as to draw in a 

 fresh supply. In fact, during the coldest weather the 

 ventilators were frequently closed to prevent the too 

 rapid lowering of the temperature in the cellar. The 

 tests showed, that this flue could not be depended on 

 to raise the air to a proper temperature when the mer- 

 cury outside was at 15" or lower. The air was raised 

 about 20°, the amount varying with conditions. 



During January further experiments showed that 

 the temperature of the cellar could be easily reduced 

 to 35" when the outside air was at 15° to 20°. How- 

 ever, the building proved to be lacking in two essen- 

 tials: (i) it was not deep enough in the earth, and (2) 

 the floor between it and the tool room above was not 

 properly laid. This floor is double, of half -inch stuff. 

 It is now thought that the cellar room should also 

 be heavily ceiled. 



The total range of temperature in the cellar during 

 January was 35° to 42". This result, however, was 

 secured by carefully watching the conditions. An 

 equally good result can not be secured, when outside 

 temperatures are fluctuating, without constant atten- 

 tion. 



Professor Alwood thinks that, with the improve- 

 ments which have been suggested by experience, the 



