Inclement WeatheVy Diseases, Etc. 



ifi() 



that the rain falling on them will run off without pene- 

 trating them. The wires being thus placed, it is neces- 



[FiG. 107.] — Supports for Plants arranged for receiving 



Mats. 

 sary, in order to make the supports firmer, to connect 

 them by means of a cross-piece of sulphated wood, D, 

 laid obliquely from one support to the other. This 

 cross-piece, which must be removed at the same time 

 as the mats, to allow the plow free working-room, is 

 fixed thus : the two ends cut on a bevel [Fig. 107, a], 

 are fastened by the two screws, F. These cross-pieces 

 rest alternately on the 

 top of the longer and 

 shorter supports. Thus, 

 in Figure 107, the cross- 

 piece rests on the top of 

 the higher support, while 

 for the two adjoining 

 supports, the cross-piece 

 will rest on the top of 

 the smaller ones, and so 



on, all along the line, ^^ n >-, n- 



. . [Fig. 107, a.^ — Cross-Puces^ 



alternating. L J.^ ^J^^^^^^_ 



