AR F VA di Nt ahs . spellers: A Dy Sal Sze es] venti ys ey A NEE Oe feist: Tiare Mh scan ee Hooi E UF Ior mans g eju x AN rass Sur- -Marne É erna Fassy Pasai mAs Blas i we Ra t rng tite i SK d p te y VIET yA 4 de- e, y sx ee i AS WE a Swit a aS . Az A S 7 r T = loge2/\. Radioactive substances emit three kinds of spin in a plain surface with large extensions of the valuable assistance in devising means and which had hitherto been the