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SMITHSONIAN MISCELLANEOUS COLLECTIONS
VOLUME 53
CAMBRIAN
GEOLOGY AND PALEONTOLOGY
I
BY
CHARLES D. WALCOTT
![Smithsonian Institution Logo (1910)](http://upload.wikimedia.org/wikipedia/commons/thumb/8/87/Smithsonian_Institution_Logo_%281910%29.jpg/150px-Smithsonian_Institution_Logo_%281910%29.jpg)
"EVERY MAN IS A VALUABLE MEMBER OF SOCIETY WHO, BY HIS OBSERVATIONS, RESEARCHES, AND EXPERIMENTS, PROCURES KNOWLEDGE FOR MEN" — SMITHSON
(Publication 1949)
CITY OF WASHINGTON
PUBLISHED BY THE SMITHSONIAN INSTITUTION
1910