Virginia Storage House. 457 
of warm weather set in, without a drop to freezing from the 7th 
until the 24th of the month. During this time the temperature 
often registered above 60° in the shade, with maximum readings 
considerably higher. The cellar temperature varied just 12° for 
the entire month, reaching 58° on two occasions, but closing the 
month at 46°, with outside temperature at 34°. During Decem- 
ber the cellar temperature was reduced quite steadily from 45° to 
38°, the daily variations being at most 2°- Outside temperature 
varied considerably, but the range was between 15° and 46°. 
Quite a number of observations was made on the working of the 
supply flue and the ventilators. The tests made showed that air 
passed through the one hundred and fifty feet supply flue in 
thirty to forty seconds, and the ventilators could be depended 
upon at all times to keep up w movement of air in the cellar so 
as to draw a fresh supply. In fact, during the coldest weather we 
frequently closed the ventilators to prevent the too rapid lowering 
of the temperature in the cellar. The tests showed that this short 
flue could not be depended upon to raise the air to a proper 
temperature when the mercury outside was at 15° or lower. Our 
observations showed that the air was, under these circumstances, 
raised about 20°, varying, of course, with conditions. During 
January further experiments showed that we could quite easily 
reduce the cellar temperature to 35° when the outside air regis- 
tered 15° to 20°. However, the building proves to be lacking in 
two essentials to hold the cellar temperature stable; viz., it is 
not deep enough in the earth, and the floor between it and the 
tool-room above is not properly laid. This floor is made double, 
of half-inch stuff, while we now see that the cellar-room should 
also be ceiled in the best possible manner, to prevent interference 
by outside changes of temperature. The total range in the cellar 
during January was 35° to 42°. This result was, however, se- 
eured by carefully watching the conditions, so as to admit cold 
air during the night or periods of low temperature and then clos- 
ing the flues when the outside temperature would act injuriously 
upon the temperature of the cellar. With the temperature fluc- 
tuations which prevail in this region, much attention is necessary 
to properly control the conditions in the cellar,” 
