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The details of the various formations and the facts upon which many of the statements are based will be found, stated at such length as the time at our disposal would allow, in the various papers accompanying this Report.
PERSONNEL.
In the table given herewith will be found the names, dates, and character of employment of all who have been connected with this Survey since its beginning, except field assistants:
| Date of Appointment. | Date of Resignation | ||
| Commissioner— | L. L. Foster | ||
| State Geologist— | E. T.Dumble | Sept. 21, 1888 | |
| Geologists— | W. H. Streeruwitz. | Sept. 29, 1888 | |
| W. F. Cummins | Oct. a, 1888 | ||
| R. A. F. Penrose, Jr | Nov. 10, 1888 | ||
| T B. Comstock | June 20, 1888 | ||
| R.T. Hill | Feb. —, 1889 | ||
| Assistant Geologists— | C. C. McCulloch, Jr. | Oct. 10, 1888 | |
| G. Jermy | Nov. 10, 1888 | Dec 10, 1888 | |
| J. L. Tait | Nov. 10, 1888 | Dec 10, 1888 | |
| John Owen | Nov. 10, 1888 | Dec 13, 1888 | |
| J. A. Taff | Feb. 15, 1889 | ||
| Chas. Huppertz | Mch. 1, 1889 | ||
| J. B. Walker | April 1, 1889 | ||
| G. E. Ladd | June 1, 1889. | Nov 25, 1889 | |
| D. W. Spence | July 1, 1889 | Sept. 10, 1889 | |
| N. F. Drake | July 20, 1889 | ||
| J. S. Stone | Sept. 23, 1889 | ||
| R. S. Tarr | Nov. 1, 1889 | ||
| Chemists— | J. H. Herndon | Oct. 15, 1888 | |
| M. M. Smith | Oct. 12, 1888 | June 20, 1889 | |
| R. B. Halley | Oct. 14, 1888 | May 10, 1889 | |
| P. S. Tilson | Jan. 20, 1889 | ||
| L. E. Magnenat | Aug. 1, 1889 | ||
| Topographers— | J. A. Nagle | June 20, 1889 | |
| R. Wyschetzki | May 1, 1889 | ||
| K. Giersewald | June 20, 1889 | ||
| Clerks — | J. L. Jones | Audg. 20, 1888 | |
| E. W. Cawthorne | Aug. 20, 1888 | Oct. 22, 1888 | |
| J. E. McGuire | Sept. 28, 1888 |
Reappointed January 1, 1889.