THE NEW YORK PUBLIC LIBRARY

ASTOR, LENOX

TILDEN FOUNDATIONS

Printed by

Michames Magaz

in his can

MECHANICS'

MAGAZINE.

YORK

VOLUME FOURTH.

"The Mechanics' Magazine (most ably edited by Mr. Robertson) has, from its establishment,
had an extensive circulation; and it communicates, for Three Pence a Week, far more valuable
information, both scientific and practical, than was ever before placed within the reach of even
those who could afford to pay six times as much for it."-Mr. Brougham's Practical Observations
on the Education of the People.

LONDON:

739.9

KNIGHT AND LACEY,

PATERNOSTER ROW;

AND WESTLEY AND TYRRELL, DUBLIN.

M.DCCC.XXV.
1825