WORKS OF THE LATE

GEORGE CHANDLER WHIPPLE

PUBLISHED BY

JOHN WILEY & SONS, INC.

The Microscopy of Drinking Water.

Revised by Gordon Maskew Fair, Assistant Professor
of Sanitary Engineering, and Melville Conley Whipple,
Associate Professor of Sanitary Chemistry, Harvard
University.

Fourth Edition, Rewritten and Enlarged.

586 pages. 6 by 9. 123 figures, 7 full-page plates in the text, and 19 plates of organisms in colors. Cloth.

Vital Statistics.

Second Edition. 579 pages. 4 by 7. 89 figures.
Flexible binding.

BY HENRY BALDWIN WARD

AND

GEORGE CHANDLER WHIPPLE

AND ASSOCIATES

Fresh-Water Biology.

By Henry Baldwin Ward, Professor of Zoology in the
University of Illinois, and the late George Chandler
Whipple, with the Collaboration of a Staff of Specialists.
1111 pages. 6 by 9. 1547 figures. Cloth.

VITAL STATISTICS

AN INTRODUCTION TO THE SCIENCE
OF DEMOGRAPHY

BY

GEORGE CHANDLER WHIPPLE

Late Gordon McKay Professor of Sanitary Engineering
in Harvard University

SECOND EDITION

NEW YORK

JOHN WILEY & SONS, INC.

LONDON: CHAPMAN & HALL, LIMITED