i This was

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2

May. 1985,
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uniten. ty ♡ uff when Roberts mojket called upon hiin

hea al his study ti iuğuna

to the requirement of the Eran awateen cin

" Leegiaspalin Buf, als Het me

11th

Buffalo

1856

QUADRATURE OF THE CIRCLE, AND THE

GEOMETRY OF SOLIDS:

TO WHICH ARE ADDED,

ELEMENTS OF PLANE AND SPHERICAL

TRIGONOMETRY.

BY

JOHN PLAYFAIR, F.R.S. LOND. & Edin.
PROFESSOR OF NATURAL PHILOSOPHY, FORMERLY OF MATHEMATICS, IX TER

UNIVERSITY OF EDINBURGH.

FROM THE LAST LONDON EDITION, ENLARGED.

PHILADELPHIA:.....
LIPPINCOTT, GR Á M BO& CO.

(1854.

RM

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3