THE THEORY OF PROJECTION, SO FAR AS IT IS
AUXILIARY TO GEOMETRY;

WITH AN ACCOUNT OF THE

PLANE SECTIONS OF THE CONE AND CYLINDER,

WHICH CERTAIN GENERAL PROPERTIES OF THE CONIC SECTIONS ARE
DEMONSTRATED BY HELP OF THE FOREGOING THEORY.

PUBLISHED UNDER THE SUPERINTENDENCE OF THE SOCIETY
FOR THE Diffusion of useful KNOWLEDGE.

LONDON:

BALDWIN AND CRADOCK, PATERNOSTER-ROW.

MDCCCXXX.

From

-174117

the Estate of

Math Bos. 46ergs Eastwood,

4 Feb., 1887.

Rt. Hon. J. Abercrombie.

W. Allen. Esq., F.R.S.
Lord Althorp, M.P.

Rt. Hon. Viscount Ashley, M.P.
Rt. Hon. Lord Auckland.

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GS.

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G.S.

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F.L.S.

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& G.S.

COMMITTEE.

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Prof. Napier, F.R.S.E.
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London: Printed by WILLIAM CLOWES, Stamford Street.

2879
49.52

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Section 1. First properties of the circle

2. Of angles in a circle

3. Rectangles under the segments of chords

4. Regular polygons, and approximation to the area of the circle

5. The circle a maximum of area, and a minimum of perimeter

6. Simple and plane loci

7. Problems