94 MANUAL OF MODERN FARRIERY. 



Powdered opium . . 1 drachm, 

 Lintseed meal . . 3 drachms ; 



given as a ball or in a drink of gruel every three hours, and 

 a strong blister put on at the same time. In cases where 

 the marc is affected, the urine may be drawn off by means 

 of a catheter. This will have a considerable influence in 

 relieving the animal, and by taking off the tension will 

 tend to abate the inflammatory symptoms. The same 

 remedy is of difficult application in the horse, and should 

 never be attempted by any one but a veterinary surgeon. 



STONE IN THE BLADDER. 



Symptoms. — Irregularity in the discharge of urine, with 

 occasional suppression of it, and fits resembling spasmodic 

 colic, are the symptoms which attend this disease. To 

 ascertain if it is really stone which produces these effects, 

 the horse should be thrown on his back and the hand 

 introduced into the rectum, when the stone, if it exists, 

 will be easily felt. 



IIemedies. — If the stone is of any size it must be extracted 

 by an operation, which can only be performed by a regular 

 veterinary surgeon. When it is small, or only appears in 

 the form of gravel, diuretics are the only remedies which 

 can do good ; these, by inducing an increased flow of urine, 

 may carry with it the smaller concretions. The following 

 will be found a useful diuretic, given twice or thrice a day 

 in a drink : — 



"^urified nitre (nitrate of potash) 3 drachms, 

 Digitalis .... 1 drachm, 



DIABETES. 

 Symptoms. — This disease consists in an excessive discharge 



