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pg a109a: Second annual report of the Geological Survey of Texas Publication 5235917-2

109

CHEMICAL WORK OF THE SURVEY AT THE LABORATORY OF THE AGRICULTURAL AND MECHANICAL COLLEGE.

Mr. P. S. Tilson, during the seven months of his connection with the Survey in 1890, made sixty-nine examinations of soils, clays, and iron ores which were divided as follows:

SOILS. Complete chemical analyses ................................. 25 Mechanical analyses ....................................... 12 37 CLAYS Complete analyses ......................................... 1 1IRON ORES. Limonites, from Cass County, complete analyses ................ 25 Limonites, from Cass County, partial analyses .................. 6 31 Total . ................................................ 69