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WITH AN INTRODUCTORY ESSAY ON THE HISTORY

OF ADULTERATION.

BY

ALEXANDER WYNTER BLYTH,

M.R.C.S., F.I.C., F.C.S., &c.,"

BARRISTER AT LAW; PUBLIC ANALYST FOR THE COUNTY OF DEVON, AND MEDICAL OFFICER

OF HEALTH AND PUBLIC ANALYST FOR ST. MARYLEBONE.

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UNIVERSIT With Numerous Tables and Illustrations.
CALIFORNIA

FOURTH EDITION, REVISED AND ENLARGED.

LONDON:

CHARLES GRIFFIN AND COMPANY, LIMITED;
EXETER STREET, STRAND.

1896.

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LI

UNIVERSITY
CALIFOR HIS

PREFACE TO THE FOURTH EDITION.

The progress of analytical chemistry as applied to the investigation of Foods has made such rapid strides since the previous edition of the present work, that the author has had considerable difficulty in revising the pages so as to embody all that is of value, and, at the same time, retain the handy size of the older edition.

Processes which experience has shown to be faulty or imperfect, have been omitted and replaced by new matter, and greater attention has been paid to the application of purely physical methods.

A number of new diagrams and new tables have been added. The author believes that the work in its present form not only embodies the results of his own personal experience, but fairly represents the views and details the methods of the modern Food-analyst.

THE COURT HOUSE,
ST. MARYLEBONE, W.,

February, 1896.

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