Necessity of food. Structure of the viscera. Bile. Food of man. Gastric juice. Absorption. Assimilation. Lymphatics. Diseases affecting digestion. Advantages of temperance and exercise.
LECTURE V, OF THE SENSES IN GENERAL.
Sensation. Attention. Internal senses. Habit. Touch. Skin. Pain.
LECTURE VI, ON TASTE AND SMELL.
Tongue. Kinds of taste. Diseases of taste. Smell. Mucous membrane.
Odours. Smell in animals. Diseases of smell.
LECTURE VII, ON SOUND AND HEARING.
Production of sound. Medium. Ear. Hearing. Pendulums. Chords. Wind instruments. Tones. Velocity of sound. Music. Echo. Deafness.
LECTURE VIII, ON VISION.
The eye. Figure. Light. Vision. Accommodation to different distances.
Seat of vision. Erect vision. Single vision. Squinting.