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The A horizon soil shows both Cam and Mgt are present <br />but in very loco concentrations, Cam + Mgt = 1.1 meq./liter. <br />• In the B horizon (No. 37), calcium concentration is about <br />twice that of the magnesium level; compare 2.07 vs. 0.88 meq./liter. <br />The interburden between 5 and 28 feet is principally sandstone <br />and shows lower levels of both calcium and magnesium ions. One <br />anomaly e;:fists in the magnesium data between samples 22 and 204, <br />both representing the roof above X seam coal. Sample 22 did not <br />contain enough Mg'+ to be detected, cahereas sample 204, a composite <br />sample of four drill cores, showed 3.34 meq./liter of Mgt. It <br />appea rs that Na+ has been exchanged for Ptg in sample 22 in the <br />vicinity of. drill hole G-59. <br />In summara, the results of analyses for Na+, K+, Cam and <br />Mgt indicate the salt concentrations in the l;l extracts are more <br />or less normal; Na+ levels are judged to be normal in the lower <br />portions of interburden, but low in the A and B horizons; K+ appears <br />low to normal in concentration; Cam, and io++ are judged to be <br />normal or average. A later comparison will verify these conclusions. <br />Concluding the discussion of individual cations, <br />Na+, K+, Cam and i`1g~, let us noco examine the arithmetic ~~~~+~ <br />of all cations (E 1`te). Data in colu~ 7, Table VII, show the <br />A horizon topsoil has the locaest concentration of cations, which <br />.,,~~~ <br />total`~1.45 meq./liter. The B horizon increases about twofold <br />to 3.17 meq./liter. Then the next three intervals,, samples 36, <br />35 and 34--all sandstones--decrease slightly. Movin, downward through <br />the overburden, the total extracted cation concentrations are seen to <br />increase to maximum values exceeding 4 meq/liter, but <12.4 meq./liter. <br />Now, if the analyses have been done carefully and accurately, the <br />results obtained by electrical conductivity should show a close <br />correspondence to the total extracted cation concentrations, r(;te), <br />determined individually by instrumental analyses. <br />• <br />