Anaesthetics] 9 [Anaesthetics 



solved in water ; the quantity of the solution 

 required depends upon the size of the growth 

 that is going to be removed. For small tumours, 

 say the size of a large walnut, a four per cent, 

 solution is generally sufficient. Of this about 

 twelve minims should be injected under the 

 skin, say three drops at each corner of the 

 growth, then in the course of about ten minutes 

 the parts will be completely insensible to pain 

 and ready for operation. The same strength 

 of solution is also strong enough for eye opera- 

 tions, including the removal of growths on the 

 haw. In such cases the solution of cocaine must 

 be dropped into the eye. About five or six 

 drops is all that is required ; one drop to be 

 placed into the eye every minute until the 

 quantity required is given, then wait ten minutes 

 for the cocaine to take effect. In cases of 

 operation for inverted eyelid, the use of cocaine 

 is invaluable. 



When removing large growths; a five per 

 cent, solution is necessary, giving the same 

 quantity — about twelve minims — injecting one 

 minim just under the skin all around the 

 tumour, and where the skin is £oino- to be cut. 



There are other local anaesthetics as eucaine, 

 which is said to be safer than cocaine ; but in 

 my opinion it is not nearly so good, at any rate 

 with dogs, and the latter is perfectly safe when 

 used in proper doses. 



Eucaine is also used in conjunction with 

 adrenalin, which has a wonderful power of 

 preventing and stopping bleeding ; but in my 



