ON THE HABITS AND VICES OF HORSES, 663 
abouts they are broad ; but they grow narrow as they descend, 
assuming altogether a pyramidal figure; and they give off at 
the fetlock slender flattened tendons, which appear to unite to 
form the crescentic border of the cellular and tendinous sheath 
at that part inclosing the tendo perforans. 
The lumbrici antcriores lie within the spaces left between the 
small metacarpal bones and the suspensory ligament, under 
cover of the flexor tendons. They are longer but thinner than 
the former, and may be classed among the half-penniforrn muscles. 
They adhere for some way down the leg to the small metacarpal 
bones, become tendinous about the middle of the cannon, turn 
round the tuberculous terminations of the small metacarpals, and 
vanish in the adipose substance in front of the limb connected 
with the extensor tendons. 
Action .—The use of these small muscles seems to be un¬ 
known ; at least, it is by no means well defined. 
[To be continued.] 
Communications anU Cases* 
Ars veterinaria post medicinam secunda cst*—V egetius. 
ON THE HABITS AND VICES OF HORSES. 
By James Castley, V. S. 12 th Lancers. 
• .* i j f* Aii. .1 • • * • / If • % - F( v IJ J , * •• . LA t L 
[Continued from vol. ii, p. 418.] 
Are we not all, more or less, the slaves of habit 1 “ A man/ 
says the Spectator/* may take snuff, or smoke, or chew tobacco, 
until he is unable to pass away his time without.” The longer 
we indulge in any thing, the more difficulty we shall find in 
leaving it off. I once knew a young man, who, having taken 
up the practice of sucking his thumb whilst a child, could never 
afterw ards wholly overcome this puerile habit. And I recollect 
it was said of him, on the occasion of his getting married to a 
very pretty girl, that he actually retired from the bridal feast , 
in order to indulge the irresistible desire he felt of sucking 
his thumb for half an hour!! —Surely cribbiting is nothing 
to this. 
Now, if we, w ith all our boasted reason and resolution, are 
