Please see the [Transcriber’s Notes] at the end of this text.
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THE RARE EARTHS
THE RARE EARTHS
THEIR OCCURRENCE, CHEMISTRY, AND TECHNOLOGY
BY
S. I. LEVY
B.A. (Cantab.), B.Sc. (Lond.), A.I.C.
LATE HUTCHINSON RESEARCH STUDENT OF ST. JOHN'S COLLEGE
CAMBRIDGE
WITH ILLUSTRATIONS