Wea. THUR. FEB. 11, 1909 Ther. The evidence appears to be conclusive that desert conditions appeared only the late Cretaceous and the continued through the rest of the Paleozoic. Desert conditions are most marked in the Horton, Windsor and later Pennsylvanian. It was probably turning of the Caledonian geosyncline into mountains that brought on the desert climate and this is continued down certainly to the close of the Triassic. Of later times we have no record here. As the Nova Scotian coast opposite Prince Edward Island is all Cretaceous Pennsylvanian, and in the dells, are lns and seeming one or more folding, it is reasonable to assume that much of the island is of Picton Pennsylvanian. Some oil was sent from a trap of limestone from out the island and these are of Windsor type. Therefore there appear to be the Windsor mountains by Leominster and Picton. Is there in Hawkeye perhaps here? Bell says Dolchita is reported from Prince Edward Island. This might be Permian here, but rather the Lyding Pennsylvanian, above the Westphalian. Look of Case on Permian Reptiles.