38 



GREENHOUSES 



houses and on the value of the land. Little 

 advantage, except in case of heavy snowfall, 

 will be gained over the ridge-and-furrow sys- 

 tem (see Chapter IV) by separating the in- 

 dividual houses by less than 10 or 12 feet. A 

 fair though not absolute rule is to space the 



Fig. 20. Ground plan of range shown in Fig. 19 

 Boiler room is in basement 



houses at a distance equal to two-thirds their 

 height. (3) The workroom should be con- 

 venient to all houses of the range, yet shade 

 them as little as possible. (4) Other things 

 being equal, the boiler room should be at the 

 lowest part of the range in order to secure 

 good circulation. When the houses are long 

 it is usually best to have it near the center, 

 and to insure circulation by deepening the 



