196 



ANIMAL DENTISTRY. 



trude through the left commissure. In this position the 

 anterior end of the arcade lies between the thumb and first 

 finger, and the wrist is kept fiat on the interdental space of 

 the lower jaw, to keep the tongue from slipping beneath it. 

 The float is worked with the right hand, and the shaft is 

 guided by the palmar surface Df the base of the thumb. The 

 fioat head is kept fiat against the internal border of the 

 arcade, and not on the tables. (See Fig. 135.) 



Fig. 136. 

 Position of the Hands to Float tlie Riglit Inferior Molar Arcade. 



For the right inferior arcade place the right hand in the 

 same relative position as the left was placed for the oppo- 

 site inferior arcade, and work the float with the left hand. 

 Although the left hand is the awkward one, it is advisable 

 to train it to accomplish this feat, as it is the only position 

 that will give universal satisfaction. Another method con- 

 sists of placing the left hand upright into the interdental 

 space and guiding the shaft between the second and third, 

 or third and fourth fingers. Still another method consists 



