Lady playing on the harpsichord, [xvii. 2].

—— distressed for her dying bird, [xvii. 2. 10].

Language, natural, its origin, [xvi. 7]. & [8].

—— of various passions described, [xvi. 8].

—— artificial, of various animals, [xvi. 9].

—— theory of, [xxxix. 8. 3].

Lapping of puppies, [xvi. 4].

Laughter explained, [xxxiv. 1. 4].

—— from tickling, [xvii. 3. 5]. [xxxiv. 1. 4].

—— from frivolous ideas, [xxxiv. 1. 4]. [xviii. 12].