the high sky get could not see then in my camera field. Mexico Saturday Sep. 8 - 1916. bached out to the Geological Institute. The reading of papers began at 10 and continues to 12. The second paper was by Prof. David on the Glacial formations of the Cambrian and Permo- Cambrians. It does very interesting but he con- sumed entirely too much time. The Cambrian of Australia is best seen in the region of Adelaide. Here the Permo-Carb. beds rest directly on the Glenelus - Archegothites beds of the Lower Cambrian. Conformably beneath comes in a grit till series of beds 1000 feet thick. The Cambrian is found in the central region of the north coast extending nearly half way inland back to the O. B. Another area we finds north-east for the small central coast and it is here that the glacial formation are found. On a Bucatos map of the world he favors the