The Vet. Book 



agent ; but red iodide of mercury ointment is 

 commonly used, and sometimes a combination of 

 the two. It is not advisable to blister more than 

 two limbs at the same time, and when the lower 

 part of the limb is blistered, some vaseline or lard 

 should be put in the hollow of the heel to prevent 

 blistering the latter. 



Firing and blistering are often combined, but 

 the author thinks it is the better plan to delay the 

 application of the blister for a few days after 

 firing. 



Setons and rowels both act in a similar way to 

 a blister, and are used for much the same purposes, 

 but also in young stock as a presumed preventative 

 of Black Quarter. 



The Slings ; Cradle ; and Hobbles 



These appliances are a good deal in use, and 

 when judiciously employed are of material service. 



The slings are employed for horses which require 

 some artificial support, owing to either injury or 

 disease ; and very often this appliance is the means 

 of saving an animal's life, but are inapplicable to 

 cattle owing to the ponderous nature of their 

 stomach. 



Horses which have a stiff back, and are unable 

 to rise when once they are down, or do so with 

 difficulty, are usually put in slings at night. 



Fractures, if amenable to surgical treatment, 

 generally necessitate the use of the slings in the 



32 



