Math 5109.04.3

B

Dec. 16, 1905

Harvard University,
Philos. Dept.
Robbins Gift.

HARVARD
UNIVERSITY
LIBRARY

Copyright, 1904,

BY

GEORGE BRUCE HALSTED.

ROBERT DRUMMOND, PRINTER, NEW YORK.

PREFACE.

WRITING to Professor Hilbert my desire to base a text-book on his foundations, he answered: "Ueber Ihre Idee aus meinen Grundlagen eine Schul-Geometrie zu machen, bin ich sehr erfreut. Ich glaube auch, dass dieselben sich sehr gut dazu eignen werden."

Geometry at last made rigorous is also thereby made more simple.

KENYON COllege,

GEORGE BRUCE HALSTED.

GAMBIER, OHIO.

iii