CONTENTS. 



Depressor Anguli Oris,.. 224 



Levator Labii Inferioris, 225 



Depressor Labii Inferioris, 225 



Zygomaticus Major, 225 



Zygomaticus Minor, 225 



Buccinator, 225 



Orbicularis Oris, 226 



Combined Action of Muscles, 226 



Blood Vessels, 226 



Nerves,....* 227 



SECTION II. 



ORGANS OF MASTICATION, 227 



PASSIVE ORGANS OF MASTICATION 



The Teeth, 227 



Division into Temporary and Permanent, 228 



Classification, 228 



1. Incisors, 229 



2. Cuspid or Canine, 230 



3. Bicuspid, 232 



4. Molar, 232 



Description general of a Tooth, 229 



Description of each Class of Teeth, 229 



Microscopic Anatomy of the Pulp, 236 



Eruption of Temporary Teeth, , 244 



Eruption of Permanent Teeth, 245 



Differences between Temporary and Permanent Teeth, 246 



Differences between the Teeth and Bone, 247 



Irregularities of the Teeth, 247 



SECTION III. 



ORIGIN AND DEVELOPMENT OF THE TEETH, 248 



FORMATION OF THE ENAMEL, 253 



CHANGES PRODUCED IN THE UPPER AND LOWER JAW, OR FACE, FROM DE- 

 VELOPMENT OF THE TEETH, 255 



THE FUNCTIONAL RELATIONS OF THE TEETH, 258 



VARIETIES OF TEETH, , 258 



SECTION IV. 



BLOOD-VESSELS OF THE TEETH, 259 



NERVES OF THE TEETH 262 



SECTION V. 



COMPARATIVE ANATOMY OF THE TEETH, 268 



EXTENT OF DENTAL ORGANS IN ANIMAL KINGDOM GENERAL REMARKS ON 

 DIFFERENT CLASSES 



First Class Mammalia, 270 



Quadrumana, 273 



Insectivora, 278 



