Diseases of the Respiratory Organs. 39 
three or four drops of spirits of camphor. If no relief at- 
tends these measures, five grains of iodide of potassium 
and five minims of tincture of belladonna given in a desert- 
spoonful of water will frequently be found effectual in re- 
laxing the bronchial spasm. Idoform 2-4 grains and 
chlorodyne 7-12 minims are also useful. When the attack 
occurs after a meal an aperient is indicated. 
The instructions given for the preceding form regarding 
diet will apply to spasmodic asthma. Overloading the 
stomach and exertion after a meal, should specially be 
avoided. 
PLEURISY, 
Or inflammation of the investing membrane of the lungs, 
and that lining the thoracic cavity, may be associated with 
pneumonia (pleuro-pneumonia) or exist as an independent 
disease. 
Predisposing Causes.—Debility, disease of the lungs, or 
any of the predisposing causes of inflammation. 
Exciting Causes-—Cold ; inflammation of neighbouring 
textures ; injuries, as fracture of or wounds penetrating be- 
tween or external to, the ribs. 
Symptoms.—These generally commence with shivering 
and febrile disturbance ; respiration quickened; the in- 
spiration is remarkably short, being suddenly interrupted 
almost immediately the breath is taken ; this is due to the 
pain caused by the movement of the ribs in dilatation, or 
the inflation of the lungs on and against the pleura; the ab- 
dominal muscles are in consequence called in to aid respi- 
ration, hence the bellow-like heaving movement at the 
flank. There is a dry suppressed cough, and the usual in- 
dications of fever; nose hot and dry, tongue white and 
~ slimy, eyes bright and watery, conjunctival membrane in- 
jected, pulse hard, jerking, and frequent. As these symp- 
toms advance, the animal becomes exceedingly distressed 
