No. 6. DEPARTMENT OP AGRICULTURE. 523 



MR. COOK: I don't think you would need it a foot square. You 

 will need to have a square foot of air for the five cows. I would not 

 build them as big as that. I don't care how tropical you are. I would 

 not build them as large as that, in my own case. Up there in North- 

 ern New York, we get a whole lot of fresh air through a pencil hole. 



A Member: What do you mean by a square foot for five cows? 



MR. COOK: Say we have a barn with five cows in it. Now we 

 will put an intake flue on each side, and we will build that flue 

 six inches square. That will give us a square foot, wouldn't it. It 

 seems to me that ought to be clear. If we have five cows in this 

 room, we will put in four intake flues six inches square, or six inches 

 in diameter. 



A Member: If you have twenty cows then, you will put in sixteen? 



MR. COOK: No, I think not; I think I would begin to reduce then. 

 There is a limit to the necessity of flues. We will say that we have 

 a stable a hundred feet long; four intake flues in a hundred feet will 

 do very efficient work; practically four flues in a hundred feet will 

 give you very good work indeed. 



MR. HERR: It strikes me that if there was a strong draft there, 

 it would let in more than enough air for five cows. 



MR. COOK: In my own case, it would, I am trying to adapt my- 

 self to your conditions. We are using about 75 per cent, of intake 

 air as compared with the out-take. We have about three-quarters 

 of intake air to the five cows and that is ample where I live; in our 

 own case, the intake flues are always open. 



MR. CLARK: If the # wind pressure should be very heavy, would 

 it not be found that there was apt to be a little draft on the cattle? 

 Would you not find difficulty of that sort by adopting this plan. 



MR. COOK: Where you are subject to that strong wind pressure, 

 it will be necessary to have them under control, because in the milder 

 days, wfEhout the la/ge openings, you would not get fresh air enough. 



MR. CLARK: We get fresh air by using a narrow window, and the 

 window was opened at the top just as much as we saw proper. 



MR. COOK: In many cases that can be done; in my own case the 

 windows are double, and that of course prohibits the use of windows 

 as intake flues in the winter time. Fix your windows so that they 

 will open; say that this is the inside of the room, and then provide a 

 half chute aside and a space to have two sides on this opening so 

 that there will be an opportunity of the air coming in on each side. 



PROF. VAN NORMAN: Why do you say it is unnecessary to con- 

 duct air over to the center of the room? 



MR. COOK: Because I am satisfied that that fresh air will find its 

 way to every part of the room. There is nothing to be gained by 

 carrying the circulation into the room from there. I suppose if we 

 had a building a hundred 'feet wide, it would be another propostion. 



MR. CLARK: In the summer season, I suppose, the windows are 

 all right? 



