"in organic matter" These logs for Li, O2, and SS, are etched in or curves and in the major X's are made for the main Li, or SS. designs. In this way also quick lithologic conclusions can be made. The Hoell holes are analyzed for oil percentage to aid in spotting the probable sources for the oil. The percentages of a mixed SS, O2, or SS, or OH in a Li, is gotten by centrifuging. On this basis a dry well record can be logged in about one week's time. (McCoy, able system of subsurface recording is elaborate and on a quite scientific basis.) All of these Li., then, radiate from Clarence eastward, but thicker copies for some distance westward. The Big Line runs to may 100 feet. But junctions to the O2 are are gone over into other things. In general the Li., vanish to the O2, and to the A.E. and D.D. It is near the Hopchester that Bryan found his channel river deposits.