A sequel to the first six books of the Elements of Euclid, containing an easy introduction to modern geometry, with numerous examples. By John Casey.

PREFACE. vii
named). The other writers to whom I am indebted are mentioned in the text.
The principles of Modern Geometry contained
in the Work are, in the present state of science,
indispensable in Pure and Applied Mathematics,*
and in Mathematical Physics;t and it is important
that the Student should become early acquainted
with them.
JOHN CASEY.
86, SOUTH CIRCULAR ROAD,
DUBLIN, Aug. 31, 1886.

* See CHALMERS' " Graphical Determination of Forces in
Engineering Structures," and Levy's "Statique Graphique."
t See Sir W. Thomson's Papers on "Electrostatics and Magnetism"; Clerk Maxwell's "Electricity."