CULTURAL DIRECTIONS 277 



3. Hard freezing must be prevented. Slight freezing 

 does no harm, but a drop of 10 or 12 degrees below 

 freezing may cause a total loss of the crop. 



4. Although a certain amount of moisture is essential 

 an excessive amount must be avoided, for it causes de- 

 cay, especially if the temperature is high or the ventila- 

 tion poor. 



BUILDING PAPER 



I * MATCHED SIDING. 

 2"X 6" UPRIGHTS 



BUILDING PAPER- 



^MATCHED PINE 

 SIDING 



6 ''DEAD AIR SPACE 



OUTSIDE 

 MATCHED SIDING 



l"DEADAIR SPACE 



\" FURRING 



WALL AROUND 

 BOTTOM OF 

 BUILDING 



-^6" TILE SET IN 

 -TVVALL EVERY 



12 FT FOR 



I VENTILATION 



J PURPOSES 



/ / i 



FIG. 7O. NEW YORK CABBAGE HOUSE, SHOWING 

 WALL CONSTRUCTION 



Large storage houses are used in the great cabbage- 

 producing districts. The following description of a 

 house near Rochester is typical of the houses used in 

 New York and in Erie County, Pa. 



This house (Figures 69, 70 and 71) was built in 1900 

 at a total cost of $2,000, which includes all materials, 



