33 8 VETERINARY LECTURES 



heard of. Dressing the disease-producing grazing lands in early 

 spring with 10 cwts. crushed rock-salt to the acre has a magical 

 effect in preventing the complaint. 



550. Broncho-Pneumonia (Inflammation of the Bronchial 

 Tubes and Lungs). — Young calves, during the winter and early 

 spring months, often suffer from acute bronchitis and pneumonia. 

 The complaint is most frequently found in badly ventilated boxes, 

 or 'hulls,' which have low-lying floors, wet, soppy beds, with 

 bad drainage, and it is also the result of white scour, which 

 it frequently follows, showing itself in from four or five up to 

 ten or twelve weeks after the scour has subsided. It is considered 

 due to disease-producing germs gaining access into the body 

 through the navel openings. The symptoms, which much resemble 

 hoose, are more acute, and are generally accompanied by diarrhcea ; 

 but no worms are found in the air-passages. The lining membrane, 

 however, of the bronchial tubes is thickened, and the lungs are 

 more or less consolidated in patches, having a reddish-blue colour. 

 When first observed, the calves must be removed to better and 

 more comfortable quarters, and a little mustard and water should be 

 well rubbed into the sides behind the shoulders ; also a mixture of 

 2 to 3 drachms each of acetate of ammonia, spirits of nitre, and 

 syrup of squills, should be given three times a day. If the cough is 

 troublesome, a teaspoonful of chlorodyne may 'be added. The food 

 should be the same as recommended for hoose (par. 549). 



551. Acute Congestion of the Lungs in calves is occasionally 

 met with in an enzootic form, having all the appearance of being 

 infectious. I have seen six and seven calves, from one to two 

 months old, die in as many days from this disease. The complaint 

 is mostly seen in raw, damp, muggy weather, and, like bronchitis, 

 is found in badly appointed boxes. The malady runs its course in 

 about thirty or forty hours, and on account of the tender age of the 

 patient and the acute nature of the attack there is very little chance 

 for treatment to be successful. The calves must be removed at once 

 to more comfortable quarters, and the treatment to be adopted is the 

 same as recommended in par, 550. 



