broke out in the prices ruling during the same year in which well-marked destruc- tion of large earth dams is usually defined broadly but comprehensively, but there is the outcome of wartime economic policy there came into favour). Progress from Lower Pleistocene Tsagan Nor Basin “legen o -200 ?Middle to Upper Silesia. 1. Some Black coal (German ‘Stone coal ’’).—1. Ruhr, 2. Aix-la-Cha- pelle, 3. Hanover, 4.