82 GENERAL ADVICE 



for the growing of various delicate crops, like 

 melons or half- hardy flowers. In this position, 

 the plants can be protected in the fall. As already 

 suggested, the pits should be cleaned out in the 

 fall and filled with litter to facilitate the work of 

 making the new bed in the winter or spring. 



Various modifications of the common type of 

 hotbed will suggest themselves to the operator. 

 The frames should ordinarily run in parallel rows, 



Manure-heated forcing-house. 



so that a man walking between them can attend 

 to the ventilation of two rows of sash at once. 

 Fig. 85 shows a different arrangement. There are 

 two parallel runs, with walks upon the outside, 

 and between them are racks to receive the sash 

 from the adjacent frames. The sash from the 

 left-hand bed are run to the right, and those from 

 the right-hand bed are run to the left. Running 

 upon racks, the operator does not need to handle 

 them, and the breakage of glass is therefore less; 

 but this system is little used because of the dim*- 



