THE

U. S. Army.

CODE

OF

HEALTH AND LONGEVITY;

OR,

A CONCISE VIEW,

OF THE PRINCIPLES

CALCULATED FOR

THE PRESERVATION OF HEALTH,

AND

THE ATTAINMENT OF LONG LIFE.

BEING AN ATTEMPT TO PROVE THE PRACTICABILITY, OF CONDENS-
ING, WITHIN A NARROW COMPASS, THE MOST MATERIAL
INFORMATION HITHERTO ACCUMULATED, REGARD-

ING THE DIFFERENT ARTS AND SCIENCES, OR

ANY PARTICULAR BRANCH THEREOF.

BY

SIR JOHN SINCLAIR, BART.

VOL. IV.

Neque enim ulla alia re homines propius ad Deos accedunt, quam salutem
hominibus dando.-CICERO, PRO LIGARIO, C. 38.

EDINBURGII:

PRINTED FOR ARCH, CONSTABLE & Co.; AND T. CADELL AND
W. DAVIES, AND J. MURRAY, LONDON,

ADVERTISEMENT

TO

VOL. IV.

AS it was impossible to give, in one volume octavo, even a short account, of the numerous publications in the English language on Health, and Longevity, I determined to print the works of such celebrated authors, as Friar Bacon, Lord Bacon, Sir William Temple, and Boyle, (four of the greatest ornaments of British literature), as were not likely, though written expressly on those subjects, to be much known to persons who studied medicine, and yet were well entitled to their attention. Lord Bacon's Medical Observations, in particular, now for the first time collected into one mass, are a mine, which, I trust, will lay the foundation of many useful discoveries in physic; and the treatises of the other authors above-mentioned, have great, though certainly not equal merit. I have no doubt, alfo, that the reader will approve my having printed in this volume, the Letter from a Physician in the Highlands to his Friend in London, as it is a curious and interesting

2