Feby let 1837

BY WHICH THEON, OR OTHERS, HAVE LONG AGO VITIATED THESE BOOKS, ARE COR-
RECTED, and some of EUCLID'S DEMONSTRATIONS ARE RESTORED.

NEW YORK

THE BOOK OF EUCLID'S DATA,

IN, LIKE MANNER CORRECTED.

BY ROBERT SIMSON, M. D.
Emeritus Professor of Mathematics in the University of Glasgow.

TO THIS EDITION ARE ALSO ANNEXED,

ELEMENTS OF PLANE AND SPHERICAL TRIGONOMETRY.

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