Legal Chemistry.

A GUIDE
TO THE
DETECTION OF POISONS,EXAMINATION OF TEA, STAINS, ETC.,
AS APPLIED TO
CHEMICAL JURISPRUDENCE.

TRANSLATED WITH ADDITIONS FROM THE FRENCH OF
A. NAQUET,
Professor to the Faculty of Medicine of Paris.
BY
J. P. BATTERSHALL, Nat. Sc. D., F.C.S.

SECOND EDITION, REVISED, WITH ADDITIONS.

NEW YORK:D. VAN NOSTRAND, Publisher,23 Murray Street and 27 Warren Street.

1884.

Copyright.
D. VAN NOSTRAND.
1876.

PREFACE.

The importance of exact chemical analysis in a greatvariety of cases which come before the courts is now fullyrecognized, and the translation of this excellent little book onLegal Chemistry, by one of the most distinguished FrenchChemists, will be appreciated by a large class of Americanreaders who are not able to consult the original. While it isto be regretted that the author has not presented a much morecomplete work, there is an advantage in the compact form ofthis treatise which compensates, in some degree, for itsbrevity.

The translator has greatly increased the value of the bookby a few additions and his copious index, and especially bythe lists of works and memoirs which he has appended; andwhile he could have further increased its value by additionsfrom other authors, we recognize the weight of the considerationswhich induced him to present it in the form given toit by the author. Some chapters will have very little value inthis country at this day, but the translator could not, withpropriety, omit anything contained in the original.

C. F. Chandler.

PREFACE TO THE SECOND EDITION.

The principal change to note in this edition of theLegal Chemistry is the addition of a chapter on Teaand its Adulteration. The general interest at presentevinced concerning this species of sophistication appearedto call for a simple and concise method of examinationwhich would include the requisite tests without enteringupon an exhaustive treatment of the subject. The translator'spractical experience in the testing of tea at theUnited States Laboratory of this city has enabled him tomake a few suggestions in this regard which, he trusts,may be of use to those interested in food-analysis. Numerousadditions have also been made to the bibliographicalappendix.

J. P. B.

CONTENTS.