THE IMPROVED ART OF FARRIERY 205 



Upon this ground, therefore, the necessity of attending 

 to the proper means of ventilation in the construction 

 of the stable must be sufficiently evident." 



It now remains for us to determine the best method 

 of effecting an object so very necessary. 



According to the size of the stable, and the number 

 of horses kept therein, it will be found very convenient 

 to have one or two large tubes, whose diameter shall 

 not be less than six or eight inches ; these are carried 

 from the centre of the ceiling through the roof, and 

 must be furnished with caps to prevent the rain beat- 

 ing into the building. 



Where the loft is above the stall such a process of 

 admitting air would not be practicable ; gratings in 

 that case may be used, and these must be placed suffi- 

 ciently high to prevent the current of air coming di- 

 rectly upon the horse. 



Another mode is to have windows fixed at equal 

 distances and at a tolerable height ; these are opened 

 by means of pulleys, and answer the double purpose 

 of ventilation and the admission of light : and on this 

 subject it will be our duty next to expatiate. 



Nothing is so detrimental to the eyes as a sudden 

 transition from darkness to a glaring light, and yet this 

 is heedlessly disregarded by very many who have 

 horses under their charge. 



" It is well known, and, doubtless, most persons have 

 experienced, the very unpleasant sensation of a mingled 

 pain and giddiness, which is not readily dismissed, after 

 emerging from a dark room or passage, and suddenly 

 coming into contact with the light of an ordinary dull 

 day, not to mention the greater glare when the sun is 

 shining bright and full. Daily repetitions of this 

 would gradually injure the eyesight, and very pro- 

 bably blindness w^ould be the event. 



