202 
MEMOIRS OF A VETERINARY SURGEON. 
AIR-COOLING APPARATUS. 
This consists of a large shallow tub, say three feet in 
diameter and ten inches deep, having a round block of wood 
in the centre, one foot in diameter, which acts as a cone. 
The space between this and the sides is filled with twenty or 
thirty yards of inch lead pipe, both ends of which project 
out of the top of the tub. I connect one end of this pipe 
with a large pair of portable bellows; the other end I 
connect with gutta-percha tubing and convey it into the 
loose-box. To this I attach a rosehead like that of an 
ordinary deggin-can, and have it placed, pointing upwards, 
directly underneath and near to my patient’s nostrils. 
I then immerse the whole of my lead piping in the tub in a 
quantity of artificially made ice or some refrigerating mix¬ 
tures, such as Glauber salts, nitrate of potash, sal ammoniac 
and water mixed in certain proportions : the thermometer 
will fall from from 80° to 15° in the mixture. I then, say in 
two or three minutes, commence blowing with the bellows, 
and the current of air driven through the submerged pipe 
comes out at the rosehead cold enough for any practical 
purposes. Close to the rosehead it will be 30° Fahr., at six 
inches off it will be 40° Fahr., at a foot off it will be 
50° Fahr., and so on. It may be used for one hour at a 
time, twice or thrice a day, as the case may require. I am 
disposed to think that the salts may be evaporated and made 
serviceable over and over again, but of this I am not quite 
satisfied. 
I have now brought these papers upon acute fever to a 
close. If the ideas I have endeavoured to inculcate, prove of 
any service to my fellow-practitioners,—and I am fully con¬ 
vinced they will,—then my object has been gained, and I trust 
that much of the suffering and premature fatality of our 
patients may be averted, and other practitioners will be 
enabled to bear witness to the wisdom displayed by our 
Creator in the bountiful provision whereby nature effects her 
own repairs. Then will they experience the same emotions 
that Cow 7 per so beautifully describes :— 
“ The heart is hard in nature and unfit 
Tor human fellowship, as being void 
Of sympathy, and therefore dead alike 
To love and friendship both, that is not pleased 
With sights of animals enjoying life, 
Nor feels their happiness augment his own.” 
(To be continued .) 
