ON THE RE-ABSOIIPTION OF PUS. 157 
The carious parts were excised, and the cautery was applied to 
every part that was diseased. 
Pi'Oirnostic. —Unfavourable. ^ 
22d. —Strong fever. Considerable emphysematous engorge¬ 
ment about the withers, descending to the base of the crest; a 
gangrenous odour from the wounds. Deep scarifications; lotions 
of chloride of lime. He died at nine o’clock in the evening. He 
was opened thirteen hours after death. Besides the alterations 
produced in the withers by the gangrene and long-continued 
suppuration, the tissue of the light lung was thickly set with cc- 
chiymoseSf varying in extent from the size of a pea to that of a 
pin’s head. Other ecchymoses more considerable than these sur¬ 
rounded little masses of concrete pus, deposited here and there in 
the pulmonary parenchyma. Some of these masses icere almost 
as large as a nut, no part of this caseous matter was encysted. 
The same changes, but not so numerous, weie found in the left 
lung. The tissue of the heart was pale and flaccid. The left 
cavities contained little blood. The blood in the right cavity had 
formed a large coagulum, black, and of little consistence. The 
posterior vena cava,from the part whereit received the crural trunks 
_ to its entrance into the right auricle, was filled with a long, white, 
firm coagulum, and in which there was no mixture of red. 
The other viscera were sound. 
CASE II. 
A gelding, aged fourteen or fifteen years, entered the hospital 
August 27, 1833, with pneumonia. Five or six months before, 
after a slight contusion, an abscess was developed about the 
middle of the four last false ribs. It burst spontaneously; a 
small quantity of pus escaped ; and then the abscess closed, and 
appeared to be healed. A month afterwards, a new tumour ap¬ 
peared, which remained for some time without breaking; but the 
pus at length forced for itself an issue, after which the wound 
which was the result was not slow in cicatrizing, but it did not 
])erfectly heal; and there always remained a little fistula, from 
which a small quantity of pus escaped now and then. The 
animal did not appear to be much aflected ; the owner paid him 
no attention, and he continued to work. 
About ten or twelve days ago, the part, the seat of the first 
abscess, began to enlarge, and, for the third time, a fluctuation 
announced the presence of pus; and, as he had done before, the 
owner left the reservoir of pus to open of itself. This time, how¬ 
ever, a large portion of the integument became gangrened, and 
the result was a wound as large as the ))alm of the hand. It 
was scarcely three days since the disease began actually to mani- 
