OF THE MUSCLES IN THE HORSE. 591 
of studying similar lesions in the long flexor muscle of the head, 
the trachelo-suboccipitalis (rectus capitis anticus major); but I 
could not here, in examining the living animal, discover any 
symptom which could lead me to suspect their existence. 
The lesions were exactly the same as those in the former case, 
and to describe them would be but a repetition of what I have 
said above. The following three cases are those of rupture of the 
scapulo-trochineus (subscapularis) muscle. 
A very old horse was affected with a slight but not permanent 
lameness of the right fore leg, without any apparent cause: after 
he was destroyed, I observed some of the fibres of the right sub- 
scapulo-trochineus muscle (subscapularis) were lacerated, soften¬ 
ed, and that the tissue of the neighbouring muscle presented 
some ecchymoses; the surrounding cellular tissue was injected 
by a very small quantity of blood, and much yellow serosity. 
In another, a mare, affected with a permanent lameness of the 
anterior right leg, I found, on opening her, a transverse whitish 
very hard band (a perfect cicatrix), dividing the fleshy substance 
of the sub-scapular muscle into two parts at the bottom of the 
scapulo-humeral articulation. There were on the outside, on 
the anterior border of the muscle, near its insertion into the hu¬ 
merus, some reddish filaments firmly adhering to the muscular 
fibres, which made me imagine that the cicatrization that had 
commenced, had not yet extended through the whole of the 
ruptured portion of the muscle. 
In the horse forming the subject of the fourth case, and 
which was lame of the anterior left leg, I found, between the in¬ 
sertion of the sub-scapular muscle and the bone, a bony tumour 
adhering to the humerus. The tissue of the muscle at this part 
appeared to be transformed into a white fibrous substance, in the 
midst of which were observed several calcareous granulations. 
At the post-mortem examination of a mare that had been 
lame of the left hind leg without any perceptible cause, I found 
that the iliaco-trochantineus muscle (the iliacus), which I cut 
into, had a cavity in its interior containing several yellow masses 
of fibrinous filaments, which w 7 ere nothing but blood divested of 
the colouring matter. 
The parietes of this tumour were glistening, and covered with 
little rounded, abrupt, reddish eminences—perfect cellulo-vascu- 
lar buds. 
* % 
In the three last cases which I have collected, of interior lesions 
of the psoas magnus and superpubio femoralis(pectineus) muscles, 
the organic lesions were almost precisely the same; thus, in these 
three cases of lameness, so slight that I could not suspect such 
an appearance, the unnatural cavity in the interior of the mus¬ 
cle had smooth and yellow walls, enclosing a whitish flaky liquid. 
