. Ventilation for dwellings, rural schools and stables. Fig. W.—Showing a pair f T-siiap<«l nuttakcs adapttvl to stablos for 60takes; C ceiling register lu a cross-arm joining tlie two sides of thato 80 cows. A A A A A are the two outtakes: B B B B are the In-outtake. at AAA with a small outtake, (\ opening at the ceiling foruse in conjunction with the other registers C to bo openedonly during still weather when the stable is too warm or themovement of air too slow. The fresh air intakes, shown atB by the series of small rectangles with arrows, are 24 innumber, each 4x12 inches, the air ent
. Ventilation for dwellings, rural schools and stables. Fig. W.—Showing a pair f T-siiap<«l nuttakcs adapttvl to stablos for 60takes; C ceiling register lu a cross-arm joining tlie two sides of thato 80 cows. A A A A A are the two outtakes: B B B B are the In-outtake. at AAA with a small outtake, (\ opening at the ceiling foruse in conjunction with the other registers C to bo openedonly during still weather when the stable is too warm or themovement of air too slow. The fresh air intakes, shown atB by the series of small rectangles with arrows, are 24 innumber, each 4x12 inches, the air entering just above thesill outside, and rising between as many pairs of more effective arrangement for the outtakes is ropre- 114 Ventilation. sented in Fig. 54, which shows two U-shaped flues risingfrom just behind the manger between two cows in a stableadapted to 60 or 80 cows, seen at AAAAA, with a ceilingregister at C for use when the stable is too warm and to re-inforce the draft when needful. For 20 cows and for 40, Trf/x^. -Showing^ single straight-away outtakes which avoid all anglesand render possible the strongest draft. one of these U-shaped outtakes would answer, located nearthe center of the stable. A still better and perhaps the best practicable arrange-ment of the outtakes is represented in Fig. 55 where eachshaft is straight and rises directly through the roof andabove the level of the ridge to be fully out of the zone of aircurrents which tend to produce down drafts. In the next illustration the outtakes are straight but oc- Ventilation of Dairy Stahles. 115 cupy positions against the outer walls. Here they are Ussin the way but they must be projected farther above theroof and are more unsightly as well as being where the ani-mal heat is less efficient. In barns already built, and es-pecially if the animals are few and a cupola exists, this planmay be safely adopted with the modification that the out-takes may be carried up to the roof inside and al
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