i """"321891 Vi 

 TABLE OF CONTENTS. 



Preface, . v 



Introduction, , . . 1 



Definition of age ; periods of age. 



The Teeth, . . . . *? 



Dentition in the Horse 9 



Incisors : Temporary, permanent, structure, direction. Molars : Temporary, per- 

 manent, development and structure. 



Eruption of the Teeth, 43 



The incisors ; tusks ; molars. 



Duration of the Life of the Horse 40 



Principles of examination for determining the age of the horse; characteis fur- 

 nished by the teeth. 



First Period. 53 



Eruption of the incisors of first dentition ; at birth, one week, one month, three 

 months, four months, five months, six months, ten months. 



Second Period . 64 



Leveling, progressive use. and falling out of the incisois of the first dentition ; one 

 year, sixteen months, twenty months, two years. 



Third Period, 74 



Eruption of the permanent or adult teeth; two and a half years, rising three 

 years, three years, three years off, rising four years, four years, four years olf, 

 rising five years, five years, five years otf. 



Fourth Period 92 



Leveling of the permanent incisors; at six years, at seven years, at eight years. 



Fifth Period 100 



Wearing away of the crowns ; at nine years, at ten years, at eleven years, at 

 twelve years, at thirteen years, at fourteen years, at fifteen years, at sixteen 

 years, at seventeen years, after nineteen. 



(vii) 



