Aspergillosis.—A whitish mold will be seen along the inside of the windpipe.

Pneumonia.—The bronchial tubes contain a thick mucous exudate.

Congestion of lungs.—Blood escaped from congested lungs is found in the bronchi.

LUNGS

These should be a bright red and spongy in texture.

Congestion.—One or both lungs are distended with blood and dark in color.

Pneumonia.—A condition that follows on congestion, the whole lung affected losing its spongy texture, the air spaces being filled with a semi-solid substance.

Brooder pneumonia.—Spots due to an Aspergillus fungus on lungs. (Chickens attacked.)

MESENTERY

Cholera.—Congestion of blood vessels of mesentery often seen.