66 VETERINARY DENTAL SURGERT. 



ual tooth while located in their alveolar cavities, and 

 for that purpose I have inserted figure 15 and figure 

 32 which were taken from the jaws of a six-year-old 

 horse of good size. The following figures represent 

 the measurements of the teeth of the same head: 

 Length of lower rows, 6% inches; upper rows, 7-J-; 

 distance between sixth lower, 2|; between sixth 

 upper, 3^-; distance between first lower, I T T ; be- 

 tween first upper 2^; distance between the fourth 

 lower, 2 ; between the fourth upper, 2-|. Length of 

 first lower tooth, 2j; first upper, 2-J; sixth lower, 3; 

 sixth upper, 3j; third lower, 4 T ^; third upper, 3||. 

 The third tooth in each jaw was the longest. The 

 pulp cavity in the teeth was still present, and 

 extended about an inch up into the tooth, and was 

 -fx of an inch in diameter. Lower tusk from first 

 molar, 3$; from third incisor, J-J-. Upper tusk from 

 first molar, 2|f ; from third incisor, i|. Space be- 

 tween the lower corner incisor, from center to center, 

 2j; between the upper, 2 T 5 ; between lower tusks, 

 2 T ^; between the upper, 2j. The measurements 

 will vary with the size of the animal. 



Prof. Clark, in "Horses' Teeth" gives the follow- 

 ing figures: "Length of grinder rows, 7 inches. 

 Space between the sixth grinders, upper rows, meas- 

 uring from the inner surface, but not including the 

 angles, 3 inches; center of rows, 2\ -J; first grinders, 

 not including the space of the angles, 2 T ^. Lower 



