Present condition of topographic surveys of the United States, and new areas surveyed in 1906-7-Continued.

During the season topographic surveying was carried on in Alabama, Georgia, Illinois, Indiana, Indian Territory, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Minnesota, Mississippi, Missouri, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Pennsylvania, South Carolina, Tennessee, Vermont, Virginia, West Virginia, and Wisconsin. The survey of 56 new quadrangles and of 1 special area was completed, also the resurvey or revision of 4 quadrangles. In addition, 14 new quadrangles were partly surveyed and 2 quadrangles and 1 special area were partly resurveyed. The total new area mapped was 13,594 square miles, of which 1,457 were for publication on the scale of 1:125,000, 12,137 were for publication on the scale of 1: 62,500, and 74 were for publication on the scale of 1:24,000. The area resurveyed was 1,044 square miles, all for publication on the scale of 1:62,500. In connection with this work, 3.226 miles of primary levels and 1,266 miles of precise levels were run and 1,161 permanent bench marks were established.

Topographic surveys in eastern division from May 1, 1906, to June 1, 1907.

12 square miles in Tennessee and 62 square miles in Virginia for publication on the scale of 1: 24,000.

DETAILS OF TOPOGRAPHIC FIELD WORK, BY STATES.

Alabama.—The resurvey of the Coalville quadrangle, consisting of 249 square miles in Shelby and Jefferson counties, was completed by W. M. Beaman, R. L. Harrison, and C. C. Gardner, for publication on the scale of 1: 62,500, with a contour interval of 50 feet, in connection with which 2 miles of supplementary primary levels

were run.

Alabama-Georgia.-The survey of the Opelika quadrangle, for publication on the scale of 1: 125,000, with a contour interval of 50 feet, in Chambers and Lee counties, Ala., and Harris, Troup, and Muscogee counties, Ga., was nearly completed by J. H. Sinclair, R. W. Berry, and R. H. Reineck. The area surveyed was 755 square miles, 6 of which are in Georgia.

Georgia. The resurvey of the Stilesboro quadrangle, in Polk, Barstow, and Paulding counties, was completed by Duncan Hannegan, who also commenced the mapping of the Columbus quadrangle, in Muscogee and Chattahoochee counties. The new area mapped was 20 square miles, the resurvey consisting of 213 square miles, all for publication on the scale of 1: 62,500, with contour intervals of 20 and 50 feet. In connection with this work 37 miles of primary levels were run and 5 permanent bench marks were established.

Illinois. The governor of the State of Illinois allotted $10,000 for cooperative topographic surveys within the State, and the Director of the Federal Survey allotted a like sum for the same purpose. The mapping of the Breese, Galatia, and Wheaton quadrangles, in Blair, Clinton, Bond, Madison, Franklin, Hamilton, Saline, Williamson, Cook, and Dupage counties was completed, and the survey of the Tallula quadrangle, in Cass, Sangamon, Morgan, and Menard counties, was commenced. This work was done by W. J. Lloyd, C. L. Sadler, C. H. Hartmann, jr., and J. G. Staack. The total area surveyed was 906 square miles, for publication on the scale of 1: 62,500, with contour intervals of 10 and 20 feet. For the control of these and other areas 163 miles of primary levels were run and 45 permanent bench marks were established.

Illinois-Wisconsin.-The survey of the Waukegan quadrangle was completed by Messrs. Lloyd and Staack, for publication on the scale of 1:62,500, with a contour interval of 20 feet. The area surveyed was 160 square miles, 149 square miles being in Lake County, Ill., and 11 square miles in Kenosha County, Wis. In connection with this work 37 miles of primary levels were run and 21 permanent bench marks were established, all being in Illinois.

Indiana. The survey of the Saline City quadrangle, in Clay, Owen, Vigo, Sullivan, and Putnam counties, was commenced by W. H. Griffin, who completed 16 square miles, for publication on the scale of 1: 62,500, with a contour interval of 20 feet.

Indian Territory-Missouri.-The survey of the Wyandotte quadrangle, in District No. 1, Indian Territory, and Newton and McDonald counties, Mo., was commenced by C. G. Anderson and J. G. Staack. The area completed was 556 square miles, for publication on the scale of 1:125,000, with a contour interval of 50 feet, 341 square miles being in Indian Territory and 215 in Missouri. In connection with this work 97 miles of levels were run and 4 permanent bench marks were established, 49 miles of level line being in Indian Territory.

Iowa. The survey of the Waukee quadrangle, in Dallas, Madison, Polk, and Warren counties, was completed by Basil Duke, the area surveyed being 209 square miles, for publication on the scale of 1:62,500, with a contour interval of 20 feet. For the control of this area 71 miles of primary levels were run.

Kansas-Missouri.-The resurvey of the Leavenworth quadrangle, for publication on the scale of 1: 62,500, with a contour interval of 20 feet, was commenced by Glenn S. Smith, the area surveyed being 105 square miles, 42 square miles of which were in Platte County, Mo., and 63 square miles in Leavenworth and Atchison counties, Kans. For the control of this quadrangle 122 miles of primary levels were