Part 21 (1/2)

Wollaston, 284, 285.

Wonderful, science the natural foe of the, 224.

Woods, the relative distance of trees in, 68.

Wooer, inquirer compared to a, 45.

Words and sounds, 343.

Words, compared to type, 191.

Work, of liquid forces of attraction, 14; in electricity, 173; measure of, 119 et seq., 130, 223; relation of, with heat, 162, 245 et seq.; amount required to develop electricity, 131 et seq.; produces various physical changes, 139; substantial conception of, 183-184. See Energy.

World, the, what it consists of, 208.

World-particles, 203.

Wronsky, 172.

Wundt, on causality and the axioms of physics, 157-159; 359 footnote.

Xenophon, 49, footnote.

Young, Thomas, on energy, 173.

Zelter, 35.

Zeuner, 171.

ZoAlogy, comparison in, 239.

THE WORKS OF ERNST MACH.

THE SCIENCE OF MECHANICS.

A CRITICAL AND HISTORICAL EXPOSITION OF ITS PRINCIPLES.

By DR. ERNST MACH.

PROFESSOR OF THE HISTORY AND THEORY OF INDUCTIVE SCIENCE IN THE UNIVERSITY OF VIENNA.

Translated from the Second German Edition By THOMAS J. McCORMACK.

250 Cuts. 534 Pages. Half Morocco, Gilt Top, Marginal a.n.a.lyses.

Exhaustive Index. Price $2.50.

TABLE OF CONTENTS.

STATICS.

The Lever.

The Inclined Plane.

The Composition of Forces.

Virtual Velocities.

Statics in Their Application to Fluids.

Statics in Their Application to Gases.

DYNAMICS.

Galileo's Achievements.

Achievements of Huygens.

Achievements of Newton.

Principle of Reaction.

Criticism of the Principle of Reaction and of the Concept of Ma.s.s.

Newton's Views of Time, s.p.a.ce, and Motion.

Critique of the Newtonian Enunciations.

Retrospect of the Development of Dynamics.

THE EXTENSION OF THE PRINCIPLES OF MECHANICS.

Scope of the Newtonian Principles.

FormulA and Units of Mechanics.

Conservation of Momentum, Conservation of the Centre of Gravity, and Conservation of Areas.

Laws of Impact.

D'Alembert's Principle.

Principle of Vis Viva.

Principle of Least Constraint.

Principle of Least Action.

Hamilton's Principle.