VENTILATION AND CONSTRUCTION OF STABLES. 7 



'^]^2L_iBL_alL-^talilfi8_th^_win placed on both sides along the 

 length of the stable. It is then immaterial, as regards ventilation, how 

 many horses the stable is constructed to hold. The air has no greater 

 distance to travel than the breadth of the building. There should be ^ 

 _a window over the head of each horse two feet six inches in width and 

 three feet in heip^ht . Details as to the best construction of windows 

 and the means of obviating unpleasant draught from them when open 

 w411 be found under the head of Stable Fittings, in Chapter III. In the 

 plan marked H the sills of the windows are placed eight feet above the 

 floor. 

 jff- jn single-line stables there should be a row _of air-bricks in the front 



_3alljibout 14 inches above the^oor, and a similar row in the^back wall 

 above the window^. Tor paftern of air-brick see Plate 8. 



BjTileans of the arr-l)ricks there will be a gentle and scarcely per-^ 



ceptible stream of air, permeating the stables, and passing out through 



^~the upper apertures. 

 -^ In jouble-line stables with drop-back windows on both sides, the main- ^ 

 tenance of pure air is not difficult. WindowSj^ however, may require to 

 be clos ed, and therefore it is desirable to have a row of air-bricks on each 

 ^ide aBove'tTie windows. The lower ventilation will be best secured by 

 leaving a space of 1 inch between the door and the floor. 



•^ The "amount of air entering under these arrangements will undoubtedly 

 be considerable, but at no one point will it be so great as to create a 

 '"s'ehsilDle and unpleasant draught. It will be gradually, gently, and con-., 

 stantly diffused through the whole stable. 



Traversed openings are objectionable. They are very apt to get 

 choked, and it is very difficult to clear them out. 



If the reader will now kindly turn back to plans A, B, C, D, E, and F, 

 he will readily perceive the points in which those constructions are 

 respectively defective. 



— Plans G, H, I, and K, show various views of a sixteen-stall stable of 

 the description which the author would recommend. 



~" Though the plans are drawn for a sixteen-stall stable, yet the same i/>i^ / 



_ construction is equally available and suitable for a less or greater niunber -j^ 

 of horses. Plan L show^s a single-line stable for five horses on similar 

 principles, except that there is only one horse instead of two between ] 

 the opposite sources of air. ^ 



13. Louvre hoards. 



For ready means of affording exit for foul air no construction oft'ers so 

 great facilities as an open roof with louvre boards at its ridge running 

 the whole length of the stable. In double-line stables the depth of the 

 louvre should be sixteen inches (plan H), which will afford a ventilating 

 outlet of about four feet of each horse. In stables in w^hich the horses 

 stand in a single line or row the depth of the louvre may be reduced 

 one half. For reasons almost similar to those which have been urged in ^ 

 regard to the admission of fresh air, it is veiy essential that the foul air 



