PETER SQUIRE, F.L.S.,

CHEMIST ON THE ESTABLISHMENT OF THE QUEEN,

CHEMIST IN ORDINARY TO THE PRINCE OF WALES, AND THE ROYAL FAMILY,

PREFACE TO THE THIRD EDITION.

In consequence of the rapid sale of the First and Second Editions of this work, it has become necessary to publish a Third.

The Author has seized this opportunity of adding useful information to the book; and, acting on the kind suggestions of numerous professional friends, has made many additions to the NonOfficinal Preparations. He has also carefully corrected all that portion of the work which referred to the Prussian Pharmacopoeia, the seventh edition of which has just appeared. The results of more mature experience will be found under such heads as Liquor Ferri Perchloridi, etc., and the Groups have now added to them the pages, for the purposes of more ready reference.

277, Oxford Street,

January 1st, 1866.