THE

LAWS OF VITAL FORCE,

IN

HEALTH AND DISEASE;

OR

THE TRUE BASIS OF MEDICAL SCIENCE.

BY

E. HAUGHTON, A.B., M.D., M.R.C.S.E.,

FOUNDATION MEMBER OF THE VICTORIA INSTITUTE;

SENIOR MODERATOR IN EXPERIMENTAL AND NATURAL SCIENCE, TRIN. COLL. DUBLIN;
MEMBER BRIT. MED. ASSOC. ETC.

Read not to contradict and confute,-not to believe and take for granted,-
but to weigh and consider.'-Bacon.

Heat and cold are the two hands of nature.'-Buffon.

SECOND EDITION.

REVISED AND ENLARGED.

London:

L

JOHN CHURCHILL & SONS, NEW BURLINGTON STREET.

DUBLIN: FANNIN AND CO., GRAFTON STREET.

TO THE RIGHT HONORABLE

THE VISCOUNT POWERSCOURT.

IN GRATEFUL ACKNOWLEDGMENT OF ENCOURAGEMENT
GIVEN ON THE PUBLICATION OF

THE FIRST EDITION OF THIS LITTLE WORK,
MORE THAN SIX YEARS AGO,

(WHEN THE PRINCIPLES WHICH IT ADVOCATES

WERE WHOLLY UNRECOGNIZED BY THE