DISEASES OF METABOLISM. 103 



close quarters, one or two may become warm and 

 itchy and bite their wool. This leads to more 

 biting and others imitate it. A few animals may 

 die from ingesting too much wool, which form 

 balls in their intestines, causing an obstruction. 

 Others seem not to be affected in any way what- 

 ever. 



Treatment: This consists in removing the wool- 

 eaters from the rest of the flock, and giving each 

 one a hypodermic injection of one-tenth grain 

 apomorphin once daily for three or four days. 



4. Diabetes. 



This is a very rare affection of sheep ; the cause 

 is not known. It has been classed variously as a 

 disease of the kidneys, liver and of the blood. 



Diabetes insipidus is a condition whereby large 

 quantities of urine, with no excess of sugar, are 

 voided. 



Diabetes mellitus indicates that large quantities 

 of sugar are being passed. 



Treatment: Slaughter under government super- 

 vision, with a change of diet for the apparently 

 healthy members of the flock. 



