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 small, hardened red spots in that lung, with some tender, weak adhesions; but most of the right lung was healthy. Case 9.--Sick four weeks. Killed. Autopsy.--Right lung hardened at base; adherent to diaphragm and costal pleura; lump separated on one side only. Cyst beginning to form, outside of separation; pus between cyst and lump, but in a very small quantity. These two cases settle the character of the lump, and the manner of the formation of the cyst; the lump being lung and lymph, cut out by suppuration,--the cyst being organized, smoothed off by suppuration, friction, etc.