she coughed harder and grew worse till seven days
before she was killed, April 12th, when she brought forth a calf, and
then commenced improving again.

Autopsy.--Right lung adherent to diaphragm and costal pleura. At its
base, was a flabby, fluctuating cyst. In cutting into it, the lump was
found to be breaking up by decomposition, and scenting badly. Every
thing else normal. Was not the cyst broken through by some accident,
thus letting in the air, when she grew worse? Would she not, probably,
have overcome this disagreeable accident, and recovered, in spite of it?
This cow's hair did not look well, as did that of those in which the
cyst was air-tight; but still she was beginning to eat well again, and
appeared in a tolerable way for recovery.

Case 7.--This heifer had coughed slightly for six weeks, but the owner
said he thought no one going into his herd would notice that any thing
was the matter with her.

[Illustration: A RURAL SCENE.]

Autopsy.--Slight adhesions of lung to diaphragm. Near these adhesions
are small cysts, of the size of a walnut, containing pus and cheesy
matter; about the cysts a little way the lung was hardened, say for half
an inch. There were several cysts, and they appeared as though the
inflammation attacked only the different lobes of the lungs, leaving
others healthy between,--Nature throwing out coagulable lymph around the
diseased lobe, and forming thereby an air-tight cyst, cutting around the
diseased lobe by suppuration, so that it could be carried off by
absorption.

In the herd to which this animal belonged, nine days after the first cow
died, the second case occurred. First cow was sick five weeks. The time
of incubation could not have been over six weeks,--probably not over
three weeks. Of these cows, one improved in eight weeks, the other in
three weeks.

Case 8.--This cow had been sick three weeks. Killed.

Autopsy.--Large quantities of serum in left chest; lung adherent, and
hardened at base. On cutting into the hardened lung, one side of the
lump was found separated from the lung, with pus between the lines of
separation, and the forming coat of the cyst outside of the pus; the
other side of the lump was part and parcel of the hardened lung which
had not yet had time to commence separation. The costal pleura was
covered with organized lymph to the thickness of an inch, with the usual
characteristics. The right chest contained a small quantity of serum,
and had several