Lately published, by the same Author, price 7s. 6d.,

A

TREATISE

ON

THE CALCULUS

OF

VARIATIONS.

ILLUSTRATED BY NUMEROUS EXAMPLES.

SECOND EDITION.

THE ELEMENTS

OF

PLANE AND SPHERICAL

TRIGONOMETRY;

AND ITS APPLICATION TO

ASTRONOMY, DIALLING, AND

TRIGONOMETRICAL SURVEYING.

WITH PLATES.

DESIGNED FOR MATHEMATICAL STUDENTS.

BY RICHARD ABBATT, F.R.A.S., &c.

=

NEW EDITION, CORRECTED.

LONDON:

THOMAS OSTELL AND CO.,

83, LEADENHALL STREET.

MDCCCXLI.