=The symptoms= depend on the degree of impaction, and vary from simple, irregular, or suspended rumination to severe gastric and nervous disorder. The less acute cases are marked by failure to re-establish regular rumination or partial convalescence from fever or inflammation. The fever subsides, but the appetite remains capricious, the muzzle dry, eyes dull, spirits low, and breathing accelerated; the condition is sometimes accompanied by moaning. Slight tympanites may appear, and the contents of the rumen may feel solid, the mouth hot, clammy, and fœtid. The bowels are constipated, the fæces small in quantity, hard, covered with mucus or blood-streaked, and containing particles of undigested food; in other cases diarrhœa may set in, to be followed later by constipation. Alternations of constipation and diarrhœa may be repeated again and again. Exploration by pressure of the closed hand over the omasum will give an impression of solid resistance. There may be slight shivering, the ears and limbs are cold, the hair is erect in patches, dry and lustreless. In cases occurring independently of previous disease, diarrhœa may be the first symptom observed, the malady being preceded by local irritation and congestion; but this soon gives place to constipation or diarrhœa and the symptoms above mentioned. The animal is found lying apart on its left side, with its nose in its right flank, the pulse and breathing quickened, the eyes congested; expiration is accompanied by a grunt. The patient walks with its back arched and dragging its limbs. The appetite may continue, but only in an impaired and irregular form, and as rumination ceases grinding of the teeth becomes common. The secretion of milk is diminished or arrested, emaciation advances day by day. Fœtid eructation may be a marked symptom. This form may last from ten to fourteen days, and merge finally into paralysis of the hind limbs, drowsiness and stupor, or delirium and convulsions.