Hellburne. Took grey sand examples because of the distinctly reddish or sandy nature of the dolomite. The Chert here in the upper layer is interstrred with dolomite, and as a rule the latter is cream red, being then in sharp contrast with the sandy red Chert. Then looked at the Chert in the Phelps Stone quarry in Smith Burlington. As a rule here the Chert is a fine grained red quartzite but very rare and then there is a white or pink band bed of quartzite. When there is a shale parting it is [illegible] eroded, and sometimes vein fitted. All are shallow water formations. All of the Chert and the Lower Iron rocks are of very shallow water deposition.