common, and beds 2 to 3 feet thick are made up of Ferestellids still standing as they grew. In places Archaeoidium spines are common. Saw no Fusulinas, but some ovals, all ovate, are exceedingly rare. Also saw Steffonia. Probably there is considerable fauna here, but my chance to see them is as pseudomorphs. This design must be in the Permian, forming the Streebyan. I was much interested in the breaking of these limestones due to the intense heat of summer they joint in a frightful manner and into these joints the water penetrates and creates v-shaped channels. See the various samples taken. The whole surface also is pitted and filled with solution cavities as in pluvial climates. This could not occur elsewhere since the surfacce is very slight. Some of the joint surfaces are also covered with lime deposit (caliche). The whole mass is breaking up into angular sharp pyra- mids that comes crack down the tabular slopes, disintegrating until finally they are worked out onto the beach.