Transcriber’s Note:

The cover image was created by the transcriber and is placed in the public domain.

This ebook (originally published in 1920) was created in honour of Distributed Proofreaders 20th Anniversary.
IMPERIAL INSTITUTE
MONOGRAPHS ON MINERAL RESOURCES
WITH SPECIAL REFERENCE TO THE
BRITISH EMPIRE
PREPARED UNDER THE DIRECTION OF THE
MINERAL RESOURCES COMMITTEE WITH THE
ASSISTANCE OF THE SCIENTIFIC AND TECHNICAL
STAFF OF THE IMPERIAL INSTITUTE

THE PLATINUM METALS

BY
A. D. LUMB, A.R.S.M., F.G.S., Assoc. Inst. M.M.
LATELY OF THE SCIENTIFIC AND TECHNICAL DEPARTMENT, IMPERIAL INSTITUTE
WITH A MAP
LONDON
JOHN MURRAY, ALBEMARLE STREET, W.
1920
All Rights Reserved

v

IMPERIAL INSTITUTE
MINERAL SECTION

The Imperial Institute is a centre for the exhibition andinvestigation of minerals with a view to their commercialdevelopment and for the supply of information respecting thesources, composition and value of minerals of all kinds.

The Imperial Institute is provided with Research Laboratoriesfor the investigation, analysis and assay of minerals,and undertakes reports on the composition and value of minerals,for the information of Governments and producing companiesand firms, in communication with the principal users in theUnited Kingdom and elsewhere in the Empire.

Important minerals from within the Empire are exhibitedin the respective Courts of the Public Exhibition Galleries,and also in the Mineral Reference Collections of the Institute.

A special staff is engaged in the collection, critical revisionand arrangement of all important information respectingsupplies of minerals especially within the Empire, new methodsof usage and other commercial developments.

Articles on these and related subjects are periodicallypublished in the Bulletin of the Imperial Institute, and monographson special subjects are separately published under thedirection of the Committee on Mineral Resources.

vi

IMPERIAL INSTITUTE

Advisory Committee on Mineral Resources

The Right Hon. Viscount Harcourt, D.C.L. (Chairman).

[A]Admiral Sir Edmond Slade, K.C.V.O., K.C.I.E. (nomin

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