QUITTOR. 
55 
did not separate until the fifteenth day. The sinus continuing 
daily to increase in depth, and the pus issuing from it retaining 
its unhealthy character, I renewed the application of the sub¬ 
limate, taking special care that it reached down to the caries. 
On this occasion, the slough separated on the 11th day; but 
the suppuration continuing, without any indication of amend¬ 
ment, I resolved on the removal of the cartilage. The sinus 
took a direction in an oblique line from above downwards; its 
extremity, though the caustic had reached it, presented a bright 
green aspect, and the cartilage there was hardly thicker than a 
shilling. The horse resumed his labour seven weeks after the 
operation: a sound horn grew over the wound, and he showed 
no lameness, even upon pavL He died in July of the fol¬ 
lowing year, of stomach-staggers. 
Case III. In April, 1826, Louvet, a carrier, brought me a 
four-year-old horse that had been recently cured of poll-evil. 
According to his notions, the humour expelled from the poll had 
descended into the foot. I found a sinus running from the ex¬ 
ternal part of the heel of the near fore leg, which being large 
and not deep, enabled me to detect the green hue^ the pathog¬ 
nomonic sign of carious cartilage. I introduced a piece of subli¬ 
mate proportioned to the diameter of the opening. At the 
second dressing, which took place fourteen days afterwards, 
the slough having then come out, a Vermillion .surface was ex¬ 
posed, covered by a thick laudable pus. In this condition, the 
animal having lost his lameness, the owner, who was about 
to set out on a long journey, wished to take him along with 
him : I enjoined the necessary precautions. I was informed 
three months afterwards, on the return of Louvet, that the 
horse had been tied behind the waggon for the first three or 
four days of the journey; after which he resumed the collar, 
and worked on without showing any inconvenience. At this 
time the cicatrix was scarcely visible. 
Case IV. In June, 1826, I was called to look at a fine horse 
belonging to M. Furier, postmaster at Pontoise. A sinus se¬ 
veral lines in extent pervaded the outer heel of the hind leg; 
which only occasioned lameness in the trot upon the pave. 
Being near to a farrier’s shop I had recourse at once to an iron 
pointed and heated to whiteness. I anointed the surrounding 
parts with poplar ointment, and covered the whole with dry 
tow. Twenty days after this, the animal worked at a foot’s 
pace; and at the expiration of five weeks was driven in the 
diligence. 
Case V. M. Lebas, salt-petre manufacturer at Pontoise, 
sent for me in January, 1826, to look at a stout harness horse, 
lame of the near hind leg: the external side of the coronet was 
