35 material. These do not appear to be true concretions but consist of a more or less spongy mass of radiating fibrous crystals of -? (maybe aragonite) May have concretionary nodule in center. (170F + 180F) 10'10" Grey brown sandy shale becoming glauconitic & somewhat more sandy at top. (190F) 5'5" Grey brown sandy shale decidedly glauconitic. (200F) 5'5" Lower part grey brown sandy shale. Upper 3' considerably sandier & browner weathering buff, it is a loosey sand. This split in lithology taken as base of true Fox Hills. (210F + 220F) 10'10" Light brown sand, rather