This report is a compilation of all available data on mineral resources (exclusive of oil and gas) in 39 south Texas counties. Information from published and unpublished sources was checked and supplemented by field investigations.

Bleaching clay investigations in Gonzales County were made for the following reasons:
1. To collect data on the types of deposits and mode of deposition.
2. To direct attention to any new sites discovered.
3. To eliminate seemingly valueless areas.

The production of peat as a general soil conditioner has recently become a potentially valuable small industry for Texas and surely a new one. The credit for realizing the possibilities and need of peat in Texas perhaps should go to Messrs. Joiner, B. P.

These circulars issued from the Bureau of Economic Geology contain the record of cores and cuttings from well received and described in the Bureau.