ON VENTILATION. 79 



gagemcnt, which may be a heavy one, will most likely 

 have to be done away with. This may pro\'e not only 

 a disappointment to the owner, but it may also be a 

 great loss to him. As our breed of race-horses has 

 originated in a hot climate, it becomes necessary when 

 they are in training and have been drawn fine, inde- 

 pendently of clothing them, to keep the stable they 

 stand in in winter, up to a certain temperature of heat; 

 and that it may be properly regulated, there should be 

 kept in all race-horse stables a small self-regulating 

 thermometer, by which to ascertain any variation of 

 the heat in the stables that may arise from the changes 

 in the atmosphere, or from any number of horses being 

 taken o^it of the stables, or from others being brought 

 into them. Either of these causes will more or less 

 produce a change in the temperature of the stables, 

 which may be observed by the rising or falling of the 

 quicksilver in the glass. 



An}^ change of temperature being ascertained from 

 either of the above mentioned causes, the different 

 apertures for the admission of pure air, and those for 

 carrying off the foul, should be opened or closed as 

 circumstances may require, until the quicksilver rises 

 or falls to that degree in which the temperature of the 

 stables may be considered by the groom comfortable 

 and wholesome for the horses. 



The degree of heat which I have generally found to 

 answer this purpose, is, in winter and spring, (if the 

 horses are properly clothed) at about sixty-two. In 

 July and August, the stables are generally very hot ; 



