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VETERINARY STUDIES 



Fig. 40. — Cupola Ventilation. 



This cupola ventilator consists of a common cupola with 

 doors on two opposite sides, hinged above. 



Connected with these doors, S, 0, is a light board B, cut in 

 the middle and hinged. When this board is straight, it holds 



one or both doors partly 

 open. If the wind blows 

 against one side, that door 

 closes and the lee side door 

 opens. To close both doors 

 pull down on the rope E. 



Sheringham windows. — 

 The Sheringham window is 

 simple and efficient for a 

 stable of suitable construc- 

 tion. The system consists essentially of windows hinged at the 

 bottom and guarded at the sides so as to make troughs as the 

 windows open inward. This gives an upward current, the air 

 passing over the backs of the animals and settling down without 

 direct current. 

 There should pref- 

 erably be two sets 

 of windows on 

 each side, the 

 lower windows be- 

 ing generally used 

 for inlets on the 

 windward side, 

 and the higher 

 windows for the 

 outlets on the lee- 

 ward side. This 

 affords a simple, 

 inexpensive, and 

 easily manipulated 

 method of ventila- 

 tion, and may be 



combined with ventilating shafts. Outlet ventilating shafts 

 should have openings near the ceiling, and also close to the floor, 

 so that their use can be regulated according to season and tem- 

 perature, the upper openings of the shaft being used in hot 

 weather, and the lower openings in cold weather. 



Fig. 41. — Ventilation. (Paige.) 



1. Sheringham window in section. 



2. Sheringham window, opening inward, 

 from outside. 



Seen 



