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MICHIGAN „GEOLOGICAL AND BIOLOGICAL SURVEY.

Publication 22.

Geological Series 18.

BIENNIAL REPORT OF THE DIRECTOR

AND

REPORT ON RETRACEMENT AND PERMANENT
MONUMENTING OF THE MICHIGAN-

OHIO BOUNDARY.

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PUBLISHED AS A PART OF THE ANNUAL REPORT OF THE BOARD OF

GEOLOGICAL AND BIOLOGICAL SURVEY FOR 1916.

LANSING, MICHIGAN
WYNKOOP HALLENBECK CRAWFORD CO., STATE PRINTERS

1916

BOARD OF GEOLOGICAL AND BIOLOGICAL SURVEY, 1916.

EX OFFICIO:

THE GOVERNOR OF THE STATE,
HON. WOODBRIDGE N. FERRIS.

THE SUPERINTENDENT OF PUBLIC INSTRUCTION,

HON. FRED L. KEELER.

THE PRESIDENT OF THE STATE BOARD OF EDUCATION,

HON. THOMAS W. NADAL.

DIRECTOR,

R. C. ALLEN.

survey 4-23-179

SCIENTIFIC ADVISORS.

Geologists.—Dr. L. L. Hubbard, Houghton; Prof. W. H. Hobbs,

Ann Arbor; Prof. W. H. Sherzer, Ypsilanti.
Botanists.-Prof. E. A. Bessey, East Lansing; Prof. F. C. Newcombe,

Ann Arbor.
Zoologists.-Prof. W. B. Barrows, East Lansing; Prof. J. Reighard,

Ann Arbor; Dr. Bryant Walker, Detroit.

for borgere nofryen

LETTER OF TRANSMITTAL.

To the Honorable, the Board of Geological and Biological Survey of the State of Michigan:

Gov. Woodbridge N. Ferris.
Hon. Fred L. Keeler.
Hon. Thomas W. Nadal.

Gentlemen:—I have the honor to transmit herewith an administrative report for the biennium ending June 30th, 1916, with the recommendation that it be printed and bound as Publication 22, Geological Series 18.

Very respectfully,
R. C. ALLEN,

Director.
Lansing, Michigan,
July 30, 1916.

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