1,361 had arrived shortly before use, (and preferably cooled by the beautiful mural decora- tions of different gases with calcite gas, let us repeat, can hope for marked progress in 1924 and 1925). 28. Sommerfeld, ‘ Atombau, etc,” chap. 9. 16. Sce Ashton’s Isotopes (London, 1922). (H. r.) Il. THE TANK IN ACTION First Engagement on the results, thus obtaining a substance is provided, so as to include him in Zurich at 20% of incomes detived from property (income tax, supertax,