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UNIVE

Library.

Of California.

[graphic]

Wheatstone's telephonic concert at the Polytechnic, in which the sounds and vibrations pass inaudible through an intermediate hall, and are reproduced in the lectureroom unchanged in their qualities and intensities. Frontispiece.

THE

BOY'S PLAYBOOK
PLAYBOOK OF SCIENCE:

INCLUDING THE

Various Manipulations and Arrangemen ts

OF

CHEMICAL AND PHILOSOPHICAL APPARATUS REQUIRED
FOR THE SUCCESSFUL PERFORMANCE OF

SCIENTIFIC EXPERIMENTS.

IN ILLUSTRATION OF THE ELEMENTARY BRANCHES OF
CHEMISTRY AND NATURAL PHILOSOPHY.

BY

JOHN HENRY PEPPER,

F.C.S., A. INST. C.E.; LATE PROFESSOR OF CHEMISTRY AT THE ROYAL POLYTECHNIC,

ETC. ETC.

AUTHOR OF "THE PLAYBOOK OF METALS."

NEW EDITION.

Illustrated with 470 Engravings.

CHIEFLY EXECUTED FROM THE AUTHOR'S SKETCHES,
BY H. G. HINE.

LONDON:

GEORGE ROUTLEDGE AND SONS,

THE BROADWAY, LUDGATE.

NEW YORK: 416, BROOME STREET.

LONDON:

SAVILL, EDWARDS AND CO., PRINTERS, CHANDOS STREET.

COVENT GARDEN.

ΤΟ

PROFESSOR LYON PLAYFAIR, C.B., F.R.S.

PROFESSOR OF CHEMISTRY IN THE UNIVERSITY OF

EDINBURGH,

DEAR SIR,

I DEDICATE these pages to your Children, whom I often had the pleasure of seeing at the Polytechnic during my direction of that Institution. I do so as a mark of respect and appreciation of your talent and zeal, and of your public-spirited advocacy of the Claims of Science in this great and commercial country.

Without making you responsible in any way for the shortcomings of this humble work on Elementary Science, allow me to subscribe myself,

Dear Sir,

Yours most respectfully,

JOHN HENRY PEPPER.

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