84 



EXPERIMENTAL PHARMACOLOGY 



fourth round draw the end of each cord in between the 

 screw eye and the edge of the board. This will usually 



Fig. 80. Method of attaching fore limbs to the dog board. 



Fig. 81. Method for quickly fastening the string to the board without tieing any knots. 



hold tightly and saves tying any knots which should be 

 avoided if possible. Stretch out the hind legs and tie them 

 down as shown in Fig. 82. 



