XI SOLIDIFIED SUNSHINE 196

XII FIGHTING WITH FUMES 218

XIII PRODUCTS OF THE ELECTRIC FURNACE 236

XIV METALS, OLD AND NEW 263

READING REFERENCES 297

INDEX 309




A CARD OF THANKS


This book originated in a series of articles prepared for _The
Independent_ in 1917-18 for the purpose of interesting the general
reader in the recent achievements of industrial chemistry and providing
supplementary reading for students of chemistry in colleges and high
schools. I am indebted to Hamilton Holt, editor of _The Independent_,
and to Karl V.S. Howland, its publisher, for stimulus and opportunity to
undertake the writing of these pages and for the privilege of reprinting
them in this form.

In gathering the material for this volume I have received the kindly aid
of so many companies and individuals that it is impossible to thank them
all but I must at least mention as those to whom I am especially