Supporting data, regarding 'The behaviour of the paramagnetic ions in the single crystals of some similarly constituted salts of the iron group of elements II. Hydrated Ni^2+ salts' by A Bose, S C Mitra and Sunil K Datta A series of tables for the magnetic anisotropies and angles of orientations, and for the coefficients b/a, c/a, B/A and C/A in the empirical and theoretical equations for ionic anisotropies presented in the affiliated paper. Annotations in ink. Subject: Chemistry / Crystallography The affiliated paper was published in volume 248 of the Proceedings of the Royal Society A as 'The behaviour of the paramagnetic ions in the single crystals of some similarly constituted salts of the iron group of elements II. Hydrated Ni2+ salts'. [1958]