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INTENDED FOR THE

INSTRUCTION AND ENTERTAINMENT

OF

YOUNG PEOPLE:

IN WHICH

THE FIRST PRINCIPLES

OF

NATURAL AND EXPERIMENTAL PHILOSOPHY

ARE FULLY EXPLAINED.

VOL. I. OF MECHANICS AND ASTRONOMY.

Conversation, with the habit of explaining the meaning
" of words and the structure of common domestic implements

to children, is the sure and effectual method of preparing
" the mind for the acquirement of science.”

Edgeworth's Practical Education.

BY THE REV. J. JOYCE.

A NEW EDITION, CORRECTED AND IMPROVED.

PHILADELPHIA:

PUBLISHED BY MAROT & WALTER, ANTHONY FINLEY, BEN-
NETT & WALTON, BENJAMIN & THOMAS KITE, A. C. CA-
REY & 1. LEA, M'CARTY & DAVIS, KIMBER & SHARP
LESS, AND LYDIA R. BAILEY.

Lydia R. Bailey, Printer,

Phys 304.1.2

1872 til 18 Gift of

Peabody i Cambridge

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TO THE HONOURABLE

CHARLES BANKS STANHOPE,*

AND TO THE HONOURABLE

JAMES HAMILTON STANHOPE.

GENTLEMEN,

I AM desirous of prefixing your names to. these volumes in token of the affectionate attachment to which, from me, you are peculiarly entitled. And I am happy in the opportunity which this publication affords me of bringing to your recollection subjects, in the study of which you successfully engaged at a very early period of life, and which are of acknowledged importance in the pursuits of every well-educated youth.

* This young man, the second son of the present Earl Stanhope, chose at an early period the profession of arms. In the year 1807, he was appointed aid-de-camp to general Moore, whom he accompanied to Sicily and Sweden. In the latter end of the year 1808, he was, as major, appointed to the command of the 50th regiment, then in Spain, at the head of which he was shot through the heart, at Corunna, on the 16th of January, 1809.

In perusing this little work you must bear in your minds, that it is not intended for proficients in philosophical knowledge, but for noviciates in science; not for yourselves in the present advanced stage of your progress, but for those young persons who are unacquainted with the rudiments of natural and experimental philosophy.

I am too well acquainted with the excellence of your dispositions to suppose it necessary for me to apologize for laying before you a work that has no extraordinary claim to your acceptance. You will, I am sure, appreciate its value, not so much by its intrinsic contents, as by the good-will with which it is presented.

Before I conclude this short address, permit me to say,

that my own happiness will ever be much augmented, by the assurance of the happiness and distinguished usefulness of those with whom I have spent so many years of my life, and to whose per manent interest, I am sure, you will acknowledge I have never been inattentive.

Sincerely wishing you, Gentlemen, all the feli city which the honourable exercise of distinguished talents and virtuous minds can confer upon the possessors,

I subscribe myself
Your very affectionate Friend
And obedient Servant,

THE AUTHOR. CLAPTON, MAY, 1800.

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