242 PEACH HOUSE FOR FORCING. 



when the fires are began, either for flues or 

 pipes, they must be continued every evening 

 moderately till nine or ten o'clock, and so left 

 to cause proper warmth in the house during 

 the night, and be revived in the morning, if 

 cold weather ; and if there be no bark bed, 

 continue the fire throughout the day, but when 

 there is a bark bed, the day fires will only 

 be necessary in sharp, cutting weather, or 

 during severe frosts ; always, however, endea- 

 vour to keep as regular a heat as possible, 

 which ought not to exceed sixty degrees, or 

 thereabouts, as a greater heat is very apt to 

 prove unsuccessful, not only to peaches and 

 nectarines, but also to most other kinds of tree 

 fruits. 



Air should be admitted only a little, at the 

 early part of the season, and that chiefly in the 

 middle of the day, while the sun is out, and in 

 greater proportions, as the spring and warm 

 weather advances, as the power of the sun will 

 sometimes increase the heat very considerably ; 

 then also increase the admissions of air by 

 degrees, until the middle of the day, after 



