150 



ANIMAL MECHANISM. 



When the horse had his feet furnished with the india-rubber 

 boxes which have just been described, thick transmitting 

 tubes not easily crushed were fitted to these receptacles. 

 These tubes are usually fastened by flannel bands to the legs 

 of the animal, and thence directed to a point of attachment 

 at the level of the withers ; they are then continued to the 

 registering apparatus, which has been already described 

 in the experiments on biped locomotion. The registrar now 



Fig. 44. — This figure represents a trotting horse, furnished with the different 

 experimental instruments ; the horseman carrying the register of the 

 pace. On the withers and the croup are instruments to show the re- 

 actions. 



carries a great number of levers ; he must have four at 

 least — one for each of the legs, and usually two other levers 

 which receive their movements of re -action from the withers 

 and the croup. Similar kiilds of apparatus to those repre- 

 sented in fig. 28 are employed. for this purpose. 



The rider carries by the handle a portable registering in- 

 strument, to which all the levers give their signals at once ; 

 the hand which holds the reins is also ready to compress a 



