. Annual Reports of the Department of the Interior 1905. ds. The overhaulingof all the instruments was continued. The purchase ofinstruments during the year was confined largely to regu-lar types to provide for loss by wear and tear. Severalnew precise levels and rods of the Coast Survey type havebeen purchased, and they have been found so satisfactorythat more may be procured to replace primary improved designs have been experimented these are an adaptation of the solar compass toplane-table work, a new form of sight alidade, an attach-ment for taking the telescopic ali
. Annual Reports of the Department of the Interior 1905. ds. The overhaulingof all the instruments was continued. The purchase ofinstruments during the year was confined largely to regu-lar types to provide for loss by wear and tear. Severalnew precise levels and rods of the Coast Survey type havebeen purchased, and they have been found so satisfactorythat more may be procured to replace primary improved designs have been experimented these are an adaptation of the solar compass toplane-table work, a new form of sight alidade, an attach-ment for taking the telescopic alidade apart so that it willpack in smaller compass, and an attachment to alidadesfor stadia work. The filing of the original records under the existingcard system was continued. The number of pieces filedwas about 1,100, comprising triangulation, level, andtopographic notebooks and plane-table sheets, and about200 pieces of miscellaneous material. Other materialrelating strictly to the individual quadrangles was sepa-rately filed. GEOLOGICAL SURVEY. A LEGEND Astronomic stationsTriangulation stationsRoutes of primary traverseRoutes of spirit levelsQuadrangles completely leveled Published Surveyed and in course of publication Surveyed in 1904-05 and in courseof publication 106 105 104 103 102 MAP OF SOUTHERISr TEXAS, SHOWI]SrG PBOGBESS OJ T( og
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherwashi, bookyear1905
