rtment of Commerce. Write for lists of publications of these
departments.

The following books on industrial chemistry in general are recommended
for reading and reference: "The Chemistry of Commerce" and "Some
Chemical Problems of To-Day" by Robert Kennedy Duncan (Harpers, N.Y.),
"Modern Chemistry and Its Wonders" by Martin (Van Nostrand), "Chemical
Discovery and Invention in the Twentieth Century" by Sir William A.
Tilden (Dutton, N.Y.), "Discoveries and Inventions of the Twentieth
Century" by Edward Cressy (Dutton), "Industrial Chemistry" by Allen
Rogers (Van Nostrand).

"Everyman's Chemistry" by Ellwood Hendrick (Harpers, Modern Science
Series) is written in a lively style and assumes no previous knowledge
of chemistry from the reader. The chapters on cellulose, gums, sugars
and oils are particularly interesting. "Chemistry of Familiar Things" by
S.S. Sadtler (Lippincott) is both comprehensive and comprehensible.

The following are intended for young readers but are not to be despised
by their elders who may wish to start in on an easy up-grade: "Chemistry
of Common Things" (Allyn & Bacon, Boston) is a popular high school
text-book but differing from most text-books in being readable and
attractive. Its descriptions of industrial processes are brief but
clear. The "Achievements of Chemical Science" by James C. Philip
(Macmillan) is a handy little book, easy reading for pupils.
"Introduction to the Study of Science" by W.P. Smith and E.G. Jewett
(Macmillan) touches upon chemical topics in a simple way.

On the history of commerce and the effect of inventions on society the
following titles may be suggested: "Outlines of Industrial History" by
E. Cressy (Macmillan); "The Origin of Invention," a study of primitive
industry, by O.T. Mason (Scribner); "The Romance of Commerce" by Gordon
Selbridge (Lane); "Industrial and Commercial Geography" or "Commerce and
Industry" by J. Russell Smith (Holt); "Handbook of Commercial Geography"
by G.G. Chisholm (Longmans).

The newer theories of chemistry and the constitution of the atom are
explained in "The Realities of Modern Science" by John Mills
(Macmillan), and "The Electron" by R.A. Millikan (University of Chicago
Press), but both require a knowledge of mathematics. The little book on
"Matter and Energy" by Frederick Soddy (Holt) is better adapted to the
general reader. The most recent text-book is the "Introduction to
General Chemistry" by H.N. McCoy and E.M. Terry. (Chic