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CONTENTS.
PAGE
PREFACE
17
PART I. INTRODUCTION. BY WM. BULLOCK CLARK
ESTABLISHMENT OF THE SURVEY
The Bill
The Meeting of the Commission
The Officers of the Survey....
21
23
25
27
The Collection and Detailed Investigation of the Minerals, Rocks and
Fossils
31
PART II.
HISTORICAL SKETCH, EMBRACING AN ACCOUNT OF THE PROGRESS
OF INVESTIGATION CONCERNING THE PHYSICAL FEATURES AND
NATURAL RESOURCES OF MARYLAND. BY WM. BULLOCK CLARK,
Information acquired during Colonial Days regarding the Physical Features
and Natural Resources of the State
40
41
43
45
....
52
Early Geological Investigations in the Period between the Revolution and
the Organization of the First State Geological Survey..
The Work of the First State Geological Survey and the Investigations
carried on under Private Auspices during the same Period ...
The First State Geological Survey, 1834-41 ...
Investigations made under other Auspices
An Account of both Private and Official Investigations conducted after the
Termination of the First State Geological Survey to the Outbreak of
the Civil War ...
Investigations conducted under other than State Auspices.
57
64
66
Investigations conducted by the State Agricultural Chemists, 1848-62
Sketch of the History of the Maryland Academy of Sciences
68
70
The Establishment and Work of the Maryland Agricultural College and
Agricultural Experiment Station
73
The Maryland Agricultural College
The Maryland Agricultural Experiment Station.
Geological Investigations carried on by Private Interests after the Civil War
Geological Investigations carried on under the Auspices of the Johns Hop-
76
79
kins University.....
83
An Account of the Work of the recently organized State Bureaus.
Operations of the United States Geological Survey in Maryland.
Operations of the United States Coast and Geodetic Survey in Maryland..
115
Surveys of Baltimore and Vicinity.....
116
Hydrographic Survey of the Branches of the Lower Patapsco.
PART III. OUTLINE OF PRESENT KNOWLEDGE OF THE PHYSICAL
FEATURES OF MARYLAND, EMBRACING AN ACCOUNT OF THE
PHYSIOGRAPHY, GEOLOGY, AND MINERAL RESOURCES. COMPILED
BY WM. BULLOCK CLARK
REVIEW OF GEOLOGICAL CHRONOLOGY AS REPRESENTED IN MARYLAND...... 200
187
190
191
192
193
194
195
196
197
198
199
PART IV.
BIBLIOGRAPHY AND CARTOGRAPHY OF MARYLAND, INCLUD-
ING PUBLICATIONS RELATING TO THE PHYSIOGRAPHY, GEOLOGY
AND MINERAL RESOURCES. BY EDWARD B. MATHEWS
Bibliography.
Cartography
PART V. FIRST REPORT UPON MAGNETIC WORK IN MARYLAND,
INCLUDING THE HISTORY AND OBJECTS OF MAGNETIC SURVEYS.
BY L. A. BAUER..
THE DEVELOPMENT AND PURPOSES OF MAGNETIC SURVEYS
The Magnetic Declination...
The Secular Variation of the Magnetic Declination
The Magnetic Inclination
229
231
332
403
405
407
411
413
THE DISTRIBUTION OF THE MAGNETIC DECLINATION IN MARYLAND
Explanatory Remarks....
486
Table of Magnetic Declinations observed by the Maryland Geological
Survey
489
Table of Magnetic Declinations observed by the Coast and Geodetic Survey, 490
Isogonic Chart for 1900....
492
Isogonic Charts for 1700 and 1800
494
The Secular Motion of the Agonic line over Maryland
The Effect of the Secular Variation of the Magnetic Meridians
495