ANIMAL DENTISTRY. 



195 



passed beyond the outer border of the jaw (upper branch 

 of the premaxilla) but are fortified gently upon it. The 

 float head is kept flat against the outer edge of the arcade 

 and not upon the table surface. (See Fig. 133.) 



For the left superior arcade pass the left hand, palm up- 

 ward, through the interdental space, from right to left, until 

 the tips of the fingers protrude slightly from the left Commis- 

 sure, and let the thumb rest easily on the palate in the re- 



FiG. I3S- 

 Position of the Hands to Float the Left Inferior Molar Arcade. 



gion of the first superior molar. Work the fioat with the 

 right hand and guide the shaft with the palmar .surface of 

 the fingers of the left. (See Fig. 134.) 



For the left inferior arcade pass the left hand, palm down- 

 ward, through the interdental space, from right to left, under 

 the tongue, and when the left border of the tongue is reached 

 with the finger tips, direct the hand upward between the 

 tongue and left arcades (the dorsal surface to the tongue 

 and palmar surface to the arcades), and let the thumb pro- 



