6WHY HAS MAN TWO EYES?
23A CONTRIBUTION TO THE HISTORY OF ACOUSTICS.[134]
7ON SYMMETRY.
24REMARKS ON THE THEORY OF SPATIAL VISION.[147]
8ON THE FUNDAMENTAL CONCEPTS OF ELECTROSTATICS.[26]
25INDEX.
9I. THE PRINCIPLE OF THE EXCLUDED PERPETUAL MOTION.
26PRESS NOTICES.
10II. MECHANICAL PHYSICS.
27TESTIMONIALS OF PROMINENT EDUCATORS.
11III. THE PRINCIPLE OF ENERGY IN PHYSICS.
28TITLES OF THE LECTURES.
12IV. THE CONCEPTIONS OF HEAT.
29PRESS NOTICES.
13V. THE CONFORMITY IN THE DEPORTMENT OF THE ENERGIES.
30CONTENTS.
14VI. THE DIFFERENCES OF THE ENERGIES AND THE LIMITS OF THE PRINCIPLE OF ENERGY.
31CATALOGUE OF PUBLICATIONS
15VII. THE SOURCES OF THE PRINCIPLE OF ENERGY.
32The Religion of Science Library.
16THE ECONOMICAL NATURE OF PHYSICAL INQUIRY.[60]
33THE OPEN COURT
17ON TRANSFORMATION AND ADAPTATION IN SCIENTIFIC THOUGHT.[69]
34THE MONIST
