Section of an incisor tooth 21 Arrangement of the substances composing a molar tooth 26 View of a molar tooth 29 A permanent and temporary incisor tooth 48 Molar tooth about to be shed 62 Molar tooth recently cut 62 Table of the 3 year old incisor tooth 79 Table of the 3 year off incisor tooth 79 Tables of the incisor teeth at 4 years off 85 Tables and arrangement of the incisor teeth rising 5 years 92 Tables and arrangement of the incisor teeth at 5 years old 95 Tables and arrangement of the incisor teeth at 6 years old 99 Tables and arrangement of the incisor teeth at 7 years off 103 Tables of the incisor teeth at 8 years off 106 Tables of the incisor teeth at 9 years old 109 Tables of the incisor teeth at 10 years old 110 Tables of the incisor teeth at 12 years old 112 Tables of the incisor teeth at 14 years old 112 Tables of the incisor teeth at 16 years old 115 Tables and arrangement of the incisor teeth at 28 years old 119 Tables and arrangement of the incisor teeth at 29 years old 120 Tables of the incisor teeth at 30 years old 121 Irregularity in the growth of the corner incisor tooth 140 A parrot mouth 147 Changes caused by a diseased tooth 175 Mr. Gowing's tooth forceps 183 The lever to ditto 184 The forceps, fixed 185 Mr. Gowing's framed chisel 188 Mr. Gowing's guarded chisel 190 Mr. Gowing's repeller for the guarded chisel 191 Mr. Gowing's lateral repeller for the guarded chisel 193 CONTENTS. Par. Page. 1. That the teeth of the horse denote the age of the animal &c. 1 2. In every case the evidence of the teeth is secondary to direct and substantiated testimony; &c. 3 3. Some of the causes which induce certain persons to doubt &c. 4 4. The teeth more frequently contradict an arbitrary calculation than disagree with fact. 7