XVlii CONTENTS 



PAGE 



3. THE SENSE OF TASTE : Papillae of the Tongue - The Taste 



Buds* Sensations of Taste 294 



4. THE SENSE or SMELL : The Nasal Cavities The Sense 



Organs of Smell Sensations of Smell . . . .296 



5. THE SENSE OF SIGHT : Protection for the Eye The Tear 



Glands and Ducts Sebaceous Glands Movements of 

 the Eyes General Form of the Eye Coats of the Eye 

 The Lens of the Eye The Humors of the Eye The Eye 

 as a Camera Accommodation of the Eye Sensations of 

 Sight The Blind Spot and the Yellow Spot Defective 

 Eyes Hygiene of the Eyes 298 



6. THE SENSE OF HEARING: The External Ear The Middle 



Ear The Bones of the Middle Ear General Structure of 

 the Inner Ear The Structure and Functions of the Semi- 

 circular Canals The Structure and Functions of the 

 Cochlea Sensations of Sound Loudness, Pitch, and 

 Quality 308 



CHAPTER XV 

 A STUDY OF THE VOICE AND OF SPEECH 



The Vocal Organs of Man The Cartilages of the Larynx The 

 Vocal Cords Resonating Cavities Speech Loudness, 

 Pitch, and Quality The Care of the Voice Sounds pro- 

 duced by Other Animals . . . . . .315 



INDIX 321 



