HYGIENE AND PUBLIC HEALTH

AND

PUBLIC HEALTH

BY

LOUIS C. PARKES, M.D., D.P.H. UNIV. OF LOND.

CONSULTING SANITARY ADVISER TO H.M. OFFICE OF WORKS; CIVILIAN SANITARY MEMBER
OF THE ADVISORY BOARD FOR ARMY MEDICAL SERVICES; MEDICAL OFFICER OF
HEALTH OF THE METROPOLITAN BOROUGH OF CHELSEA; EXAMINER

IN HYGIENE AND PUBLIC HEALTH TO THE UNIVERSITY OF

LONDON; FELLOW OF THE ROYAL SANITARY INSTITUTE

AND

HENRY R. KENWOOD, M.B. EDIN., D.P.H. LOND.

PROFESSOR OF HYGIENE AND PUBLIC HEALTH AT UNIVERSITY COLLEGE, LONDON; MEDICAL
OFFICER OF HEALTH AND PUBLIC ANALYST OF THE METROPOLITAN BOROUGH OF
STOKE NEWINGTON; FELLOW OF THE ROYAL SANITARY INSTITUTE

THIRD EDITION, WITH ILLUSTRATIONS.

PHILADELPHIA

P. BLAKISTON'S SON & CO.

1907

PRINTED IN ENGLAND

1425 P25

1907

PREFACE

THIS, the third edition under the conjoint authorship, has been carefully revised. A certain amount of new matter has been introduced, but some parts of the previous edition have been compressed and abbreviated, so as to maintain the work in a convenient form for handiness of reference. With this object also the size of the page has been slightly enlarged, so as to avoid undue bulkiness.

August, 1907.

A

L. C. P.

H. R. K.