Chapter VI.--Acids. Chapter VII.--Preparation of Metals and

Metalloids. Chapter VIII.--Special Preparations. Index.

_The Journal of the Faraday Society._--"This book cannot be too strongly recommended." _Educational News._--"Most valuable." _The Lancet._--"The true educational method is set forth in this little work." _Journal of Education._--"It is useful both to teacher and to pupil."

EXERCISES IN PHYSICAL CHEMISTRY. By W. A ROTH, Ph.D., etc., Late Professor of Chemistry in the University of Greifswald. Translated for the use of Students by A. T. CAMERON, M.A., B.Sc., of the University of Toronto. Price _6s._ net. Fully Illustrated.

CONTENTS:--Chapter I.--Introductory. Chapter II.--The Determination of Density. Chapter III.--Determination of Molecular Weights in Solutions. Chapter IV.--Thermo-Chemistry.