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The following is a list of the topographic map sheets of this State which were engraved up to the first of December, 1890:

• Bastrop,
• Austin,
• Blanco,
• Fredericksburg,
• Kerrville,
• Taylor,
• Georgetown,
• Burnet,
• Llano,
• Mason,
• Gatesville,
• Lampasas,
• San Saba,
• Brady,
• Meridian,
• Hamilton,
• Brownwood,
• Coleman,
• Granbury,
• Stephenville,
• Breckenridge.

Assistant Stelman Forney, of the United States Coast and Geodetic Survey, left Washington late in November for El Paso, where he will begin the reconnaissance for primary triangulation. His scheme will follow the general direction of the Mexican boundary line, and will be connected with the base lines measured by this Survey and by the United States Geological Survey.

In this district an effort was made by Prof. Streeruwitz, assisted by Mr. Wyschetzki, to complete the section begun last year by mapping the area between the Quitman Mountains and the Rio Grande. This was, however, found to be impracticable on account of lack of facilities for securing supplies and the impassable condition of the old roads south of the mountains. It was therefore thought best to map in the Diabolo and Carrizo mountains on the northeast, which was accordingly done.

The accuracy of the work done in this district is fully established by Dr. Woodward's remeasurement of many of the angles with instruments of great precision, with resulting differences well within the limit of error of the smaller instrument belonging to the Survey, and his verification of the Texas Base Line to within 1/32000.

For the benefit of the survevors of West Texas Dr. R. S. Woodward, of the United States Geological Survey, in connection with Prof. Streeruwitz, erected monuments in the vicinity of Torbert, giving the true north and south line, and also an accurately measured line for the