INTRODUCTION. 
Tue following brief description of methods and 
instruments may contain some useful practical hints 
for those whose experience in such matters is limited. 
Method of Killing and Preparing the Dog.—The 
quickest and most merciful method of killing the dog 
is to chloroform him. For this purpose it is only 
necessary to have a tight box or metal can with a 
well-fitting cover. In the bottom of this box place 
a sponge saturated with chloroform, put in the dog 
and close the lid. After a short time the animal 
becomes quiet, but it should not be removed from the 
box until all respiratory movements have ceased. For 
convenience in dissecting the dog should then be 
tied down upon some form of dog-holder. Perhaps 
the simplest and most economical form, one which 
can be readily made and answers ‘every purpose, 1s 
shown in I, Fig. 1. It consists of a board about 30 
inches long and 12 inches wide, supported upon two 
blocks, and having at one end a piece of bent iron 
rod which can be fastened into the mouth, and serves 
to hold the head. On the sides of the board are six 
cleats by means of which the limbs of the animal can 
be fastened in any desired position. 
With regard to the preservation of the animal, 
i the dogs aré“to be kept only a-few. days, or 
even a week, the simplest and least injurious method 
is to leave them on ice in an ice-box when they 
