iv CONTENTS OF THE FIRST VOLUME.

Page

Law. II... 46

Proofs of law II.....

Experiment I. II. Ill... 4/

Law. III.... 48

Proofs of law III..

Experiment I. II..

III. IV. V. 49

Law. IV........... 50

Proofs of law IV.....

Experiment I. II... 51

Law. V. 52

Proofs of law V...

Law. VI. 53

Proofs of law VI.......__ —---

Experiment I. II.....

III. IV. V. VI. VII. 54

VIII. IX. 55

Law. VII.

Proofs of law VII.. 56

Experiment I. II.__

III. IV. 57

Law. VIII. 58

Proofs of law VIII. 5g

Experiment I....

Inferences.......-.....-...... 60

PART VIII.

HEAT, or CALORIC.

Sect. I....Theories of heat. 62

.Nature and theorems of heat — .. 63

Sect. II...Methods of exciting and collecting heat...... 65

1. Production of heat by percussion_

2. Production of heat by friction....-..... 66