The contact does not show a decided break but does show a change in sedimentation. The Mt Autumn beds become more and more shale and finally all shale at the top. Sharply upon the shale and just slightly irregular appears a blue sandy (very fine sand), shaly limestone deposit of fossils, a bed from about 3 to 5 inches thick. This is all that one sees in the physical change, and the fact that there is again as much limestone deposition as in the Mt Autumn at the lower level goes to show further change and deeper waters than had been the condition just previous to Amheim time. Faunally however there is a marked change for now the Bryozoa are and Crinoids also are different species, there are new bivalves, arkland but otherwise one sees no brachi pods or other classes of organisms to draw attention to Amheim n Richmondian con- ditions.