254 EXPERIMENTAL INVESTIGATION OF THE ACTION OF MEDICINES. 



Fig. 127. 



A is Bernard's dog-holder, a is a metal ring, within which a bent piece of 

 metal, h, is moved up and down by the screw c. A is a straight piece, whicli is 

 fastened by a screw to a, and can be moved nearer to or farther from a corre- 

 sponding piece at h. These two pieces lie under the lower jaw of the dog ; the 

 bent piece h is screwed down on its nose, and the strap i buckled behind its 

 head, which is thus firmly fixed. It may be moved back or forward by sliding 

 the rod d through the nut e, or up and down by moving e on f, which is a 

 strong iron rod fastened to a table or board by the screw g. 



B, Brunton's holder for dogs or rabbits. A loop of cord is tied round the 

 upper jaw, the bar I passed behind the canine teeth of the dog or cat or 

 incisors of the rabbit, and the two jaws then tied together to prevent its 

 slipping out. This mode of fastening animals has been long used, and my 

 modification simply consists in the addition of the forked bar Ic. After I is 

 fastened in the mouth, the forked ends of Jc are pushed through holes in I, and 

 fastened by the screws m. k may then be fastened to an upright bar by means 

 of a nut in the same way as Bernard's or Czermak's holder. 



and one small pair, cutting well at tlie points, scalpels, forceps, 

 small bull-dog forceps with smooth points, blunt hooks, a small 

 aneurism-needle, flattened sidewise and with a rounded point 

 (Fig. 128g), ligatures, finder (a kind of probe set in a handle to 

 open up the lumen of a divided vessel), syringe, cannulae, a 

 piece of card, small whalebone-probe, and one or two swine's 

 bristles. As these are very apt to be mislaid during an opera- 

 tion, I find it convenient to have a small wooden tray about 

 three-quarters of an inch deep, with thin upright sides, and 



