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INTENDED FOR THE

INSTRUCTION AND ENTERTAINMENT

OF

YOUNG PEOPLE:

IN WHICH

THE FIRST PRINCIPLES

OF

Natural and Experimental Philosophp

ARE FULLY EXPLAINED.

VOL. I.

OF MECHANICS.

*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 ac
"quirement of science."
Edgeworth's Practical Education.

BY THE REV. J. JOYCE.

NEW EDITION CORRECTED AND IMPROVED.

PHILADELPHIA:

PUBLISHED BY M. CAREY, 121, CHESNUT STREET,

1815.

fully engaged at a very early period of life, and which are of acknowledged importance in the pursaits of every well educated youth.

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 unacquaintd 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 permanent interest, I am sure, you will acknowledge I have never been inattentive.

Sincerely wishing you, Gentlemen, all the felicity

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,

CLAPTON, MAY, 1800.

THE AUTHOR.

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