CONTENTS 



FAGS 



INTRODUCTION.— Fundamental Principles of Dental Science 7 



CHAPTER I. 



TOOTH-GERMS (ODONTOGENY). 



Periods at which the Germs are visible in the Fetus.— Dentine and 

 Enamel Germs.— A Cement Germ in the Foal.— The Horse's Upper 

 Grinders said to be developed from Five Germs, the Lower from 

 Four.— Similar development of the Human Teeth.— Monsieur Mag- 

 itot's Researches 31 



CHAPTER n. 



THE TEMPORARY DENTITION, 



Twelve Incisors and Twelve Molars.— Why the Incisors are calle 

 "Nippers." — The Treatment of Foals Affects Teething.— Roots 

 of Milli Teeth Absorbed by the Permanent.- The Tushes 47 



CHAPTER III. 



THE PERMANENT DENTITION. 



Distinction between Premolars and Molars. -The Bow-like Incisors.— 

 Contrasts between the Ui)per and Lower Grinders, and the Rows 

 formed by them. — The Incisors saved from Friction. — Horses' 

 Teeth compared with those of other Animals.— Measurements.— 

 Time's Changes. — Growth during Life 53 



CHAPTER IV. 



THE CANINE TEETH OR TUSHES. 



Practically Useless.— Different in their Nature from the other Teeth.— 

 Were "they formerly Weapons of Offense and Defense j— "Views of 

 Messrs. Darwin. Hunter. Bell, Youatt, and Winter.— Their time of 

 Cutting the most Critical Period of the Horse's Life 75 



CHAPTER V. 



THE REilNANT TEETH. 

 Usuallv regarded as Phenomenons.— The Name.— Traced to the Fossil 

 Horses, in which (in the Pliocene Period) they "Cea-^ed tobeFnnc- 

 tionaliy Developed.''— Nntnre's Metamorphoses — "The Agencies 

 which "are at work in Modeling .\nimal and Vegetable Forms." — 

 Why Remnant Teeth are often as it were. Prematurely Lost.— Fos- 

 sil Horses and a Fossil Toothed-Bird 94 



