358 



The Country Gentleman s Magazine 



together at the top, as represented in the 

 figure, or have a wooden pin passed through 

 them. When put in their proper position, 

 the lower ends of the poles will be 3 feet 



Fig. 1. 



apart frcm each other. Where the corn stack 

 is built on a frame elevated on pillars, the 

 ventilator is placed in the centre of the frame, 

 and the air enters from underneath ; but 

 where the stack is built on the ground it is 



necessary to have a small trestle, 2 feet high, 

 and long enough to reach to the outside of 

 the stack, for the purpose of making an open- 

 ing for admitting the air. No ventilator is 



reciuired at the top, as the au" passes out 

 readily enough through the upper part of the 

 stack. Fig. i shews the centre ventilator or 

 boss, with the trestle placed in position pre- 

 vious to commencing building the stack. 

 Sometimes two trestles are used, one on each 

 side, in order to secure perfect ventilation. 



Fig. 2 is another form of ventilator. In 

 this case the upright poles are equi-distant at 

 top and bottom. This form of ventilator can 

 be used, as in the other case, both with stacks 

 built on frames or v/ith such as are built on 

 the ground, and trestles are also necessary in 

 the latter case. Both forms of ventilators, 

 when placed on frames elevated above the 

 ground, should be attached to the frame by 

 nailing one end of a stay to each leg and the 

 other to the frame. We have experienced 

 great advantage from the use of such ventila- 

 tors, especially when the weather was not 

 favourable to thorough drying, and with the 

 help of these have stacked corn in a state 

 which would have entirely prevented any at- 

 tempt to save it without the help of these 

 simple contrivances. 



Another great improvement is placing the 

 stacks not immediately upon the ground 

 but upon a horizontal framing covered bj" 

 vertical uprights of cast-iron or of stone. 

 Where this is done the ricks or stacks maybe con- 

 sidered as both damp and vermin proof to a 

 large extent. 



Mr Darwick, of Roxburghshire, designed 

 what he called a " stack kiln," which is de- 

 serving of notice. In this home timber is 

 largely used, and the main idea is to have 

 through the stack in its entire bulk a passage 

 for the air. The following diagrams will 

 ilkistrate roughly the nature and the mode 

 of erecting this appliance. The diagram a re- 

 presenting an end section of the timber form- 

 ing the width of the stack, being tlie 

 same as the length of the timber, c d, and 

 width of stretch of the legs, a b. These cross 

 trusses, as they may be called, are placed at 

 intervals along the side which the stack kiln is 

 intended to occupy, as zX. a b c in the dia- 

 gram n; the longitudinal spars, rt'^/ are nailed 

 to the trusses a b, diagram a ; but the spar 

 /' g (b), corresponding to d c (a), is mov- 



