388 SURGICAL OPERATIONS. 



tor's left hand, so as to prevent it rolling or slipping before 

 the lancet. Having fairly entered the vein, the point of the 

 instrument must be elevated, at the same time that it is 

 pushed a little forward, by which motion it will be lifted 

 from, or cut its way out of the vein. A prescribed quan- 

 tity of blood should never be drawn, for the simple reason, 

 that this can never be precisely stated. If the symptoms 

 are urgent, as in all likelihood they will, your best plan is 

 not to stop the flow of blood till the animal fall or is about 

 to fall. When this occurs, run a pin through the edges of 

 the orifice, and finish by twisting round it a lock of wool. 



