'Chronic Pleurisy, with Hydrothorax'. Inspiration short. Cough dry, sometimes with expectoration; frequent or capricious; always absence of complete respiratory murmur in the inferior portion of the chest. Sometimes the gurgling noise during inspiration and expiration. Strong respiratory murmur in the superior portion. In dogs these symptoms sometimes have existence only on one side of the chest. The mucous membranes are infiltrated; serous infiltration on the lower part of the chest and belly; sometimes of the scrotum or the inferior extremities; generally of the fore legs. The animal lies down frequently, and dies of suffocation. PNEUMONIA. 'Commencement of the Inflammation'. General shivering, rarely accompanied by colicky pains, followed by partial sweats at the flanks and the inside of the thighs. Inspiration full, expiration short. Air expired hot. Cough frequently followed by slight discharge of red-coloured mucus. Artery full. Pulse accelerated, strong, full, and soft. 'Auscultation'. Absence of respiratory murmur in places where the lung is congested; feebleness of that sound in the inflamed parts, with humid crepitating wheezing. The respiratory murmur increased in the sound parts. 'Percussion'. The dead grating sound confined to the inflamed parts. Distinct resonance at the sound parts; increased sensibility of the walls of the chest slight, or not existing at all. 'Terminations'. Resolution. Temperature of the skin moderate. Sometimes profuse partial sweats. Laborious respiration subsiding; inspiration less deep. Artery less full. Pulse yielding. Breath less hot. Gradual and progressive disappearance of the crepitating 'râle'. Slow return of the resonance. 'Red Hepatization'. Respiration irregular and interrupted. 'Auscultation and Percussion. Circumscribed absence of the respiratory murmur, in one point, or in many distinct parts of the lung. The respiratory murmur increased in one or more of the sound parts of the lung, or in the sound lung if one is inflamed. 'Passage to a State of Gray Induration'. The absence of respiratory murmur indicates extensive hepatization of one lung; a circumstance, however, of rare occurrence. When the induration is of both lungs, and equally so, the respiratory murmur and the inspiration remain the same, except that they become irregular. The cough dry or humid, frequent, and sometimes varying. Exercise accompanied by difficulty of respiration, without dyspnoea. 'Resolution or Re-absorption of the Products of Inflammation of the Parenchymatous Substance of the Lungs'. Diminution of the force of the respiratory murmur in the sound parts. Cessation of the crepitating wheezing. Slow return of the respiratory murmur where it had ceased. Respiration ceases to be irregular or interrupted, and returns slowly to its natural state, or it remains interrupted. This indicates the passage from red to gray induration.