THE

ANNALS OF HYGIENE.

124328

THE OFFICIAL ORGAN OF

THE STATE BOARD OF HEALTH

OF PENNSYLVANIA.

EDITED BY

JOSEPH F. EDWARDS, A. M., M. D.

A. L. HUMMEL, M. D., Managing Editor.

VOLUME V.

JANUARY TO DECEMBER, 1890.

PHILADELPHIA, PA.:

THE HYGIENIC PUBLISHING COMPANY,

224 South 16th Street.

1890.