806 
PARAPLEGIA IN THE HORSE. 
and with great advantage. It is manufactured at Tangye 
and Company’s, Birmingham ; is made of iron, and con- 
stituted, as will be seen in the engraving, of one continuous 
chain and two wheels ; it has a hook at each end, one to 
fasten to a staple in a beam, the other to suspend the 
cross-bar ; the upper wheel is the larger, and has two grooves 
for the passage of the chain, the lower has only one, which is 
plain. The grooves in the top wheel are so made that, by means 
of little projections from the side, each link is held separately 
as the wheel revolves, and cannot slip either backwards or 
forwards ; and in consequence of one of these grooves being 
of less circumference than the other, it holds a smaller 
number of links, so that when that part of the chain which 
passes first over the larger groove is pulled, the lower wheel 
and hook suspending the slings are raised, by as many links 
at each revolution of the wheel as the larger groove holds 
more than the smaller ; while by pulling the part which first 
passes round the smaller groove the apparatus is lowered by a 
reverse process. By means of this arrangement one person is 
quite sufficient to draw up the heaviest horse ; for when the 
hold is relaxed between each pull, the chain maintains its 
position through being held by the projections in the wheel. 
For the same reason also the chain requires no securing, as it 
cannot slip ; all that is necessary is to loop up the ends out of 
the way of the animal’s legs. With the old method it was 
necessary to call in the aid of five or six strong men to draw 
up the animal ; and the end of the rope being made fast to 
some convenient place, it frequently happened that the horse 
was either lifted uncomfortably high from the ground, or not 
sufficiently high to derive benefit from the slings. It is usual 
to confine the head by a double-reined headstall, but in some 
cases the horse may have his liberty, as the lower hook of 
the pulley apparatus revolves, and thus the animal’s turning 
does not disarrange the slings. 
PARAPLEGIA IN THE HORSE. 
By A. Green, M.R.C.V.S., Dudley. 
Thinking the following case may be of interest to some of 
the members of the profession, more particularly the younger 
ones, I am induced to give an account of it, which, however, 
from the little I saw of the patient, must necessarily be very 
brief. 
Paraplegia in the horse is often caused by the animal 
