58 



VETEEINAKY HYGIENE 



Table showing the Contamination of the Air by Bbspikation in 

 Different Cubic Spaces, and the Amount of Fresh Air 

 required to Dilute to the Given Standard — viz., '2 pee 

 1,000. 



The cubic space best suited for animals is, therefore, 

 readily arrived at ; the whole thing hinges on the question 

 of how many times the air space can be changed in an hour 

 without producing a draught or causing the stables to 

 become too cold. 



In barrack-rooms it was found that under the ordinary 

 conditions of our climate a change of air six times per hour 

 was out of the question ; five times could not be borne, and 

 three times under the conditions of barrack-warming was 

 all that could be attempted. 



With regard to horses, it is well known that they are not 

 so susceptible of draught and cold as men are, and certainly 

 a change of six times in the hour can be and is borne by 

 them with impunity; still, if it were decided that three 

 times should be the limit in the number of changes of air 

 in the hour, it would argue a capacity of 5,000 cubic feet 



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