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(1.) Ease in installation, in buildings old or new. 



(2.) Adaptibility to all classes of stables. 



(3.) Suitability to variety of weather and climate. 



(4.) Facility of operation and control. 



(5.) Effectiveness in control of temperature in all parts of stable. 



As just stated, it is susceptible of easy introduction into old 

 etables and may be readily and conveniently installed in new build- 

 ings. A study of diagrams given below will show probably the best 

 relative positions for inlets and outlets. There is, however, but 

 slight objection to any number of other possible or necessary different 

 arrangements. 



Diagram A, showing floor plan of a stable for, say, 26 cattle, 

 also illustrates probably the best relative positions of fresh air 

 intakes A A A A and foul air outlets B B (beginnings of shaft in 

 ceiling, see WD, diagram B). This arrangement suits where 

 nothing in the use to be made of loft or superstructure interferes in 

 any way. 



If 'a horse fork is to be used in the superstructure, then it might 

 be necessary to change positions of B B to C C where shafts would 

 need to be constructed as shown in Diagram B by dotted lines 

 W 1 G D. The fact of the outlet shaft changing directions at G and 

 D will not interfere materially with its efficiency. These outlet 

 shafts, provided they are staunchly built as described further on, 

 may take almost any desired course so long as it is always more or 

 less upwards. 



The area indicated, 1 foot x 2 feet each, or 4 square feet for 

 the two owitlet shafts, is somewhat greater than is really necessary 

 but it is much better to have shafts slightly larger than any smaller 

 than the minimum of 15 square inches per cow mentioned above. 



The intakes AAAA might, if necessary, -be changed to pass 

 under or through walls at D D D D, say 7 inches x 12 inches. This 

 new arrangement would be advisable in case outlet openings had to 

 be placed as C C. 



In the intakes, fresh air enters at 1, passes under wall and 

 enters stable at 2, with an luipward tendency. The wall, 3, should be 

 about 6 inches thick and on this wall should be built the little guard 

 shown at M in Diagram B. The inner wall corresponding to 3, need 

 not be over 4 inches thick. , 



