Vol. 8, No. 54, p. 497. In the entry PEROV, V. F., for Khibniskikh read Khibinskikh.

Vol. 9, No. 56, p. 295. In the entry Untersteiner, N., and Maykut, G. A., for p. 12-13 read p. 12-23.

Vol. 10, No. 58, p. 134-36. The illustrations in the short note entitled “An improved method for determining ice fabri cs” by J. R. Hill and N. P. Lasca were misplaced relative to their captions. The diagram appearing above the caption for Figure 1 is in fact Figure 6 and should have appeared on p. 136. All other diagrams should be moved forward, thus Figure 1 a ppears above the caption for Figure 2 etc.

Vol. 10, No. 58, p. 162. In the first entry the name K Vilividze should read Kvlividze at both places where it appears.

Vol. 10, No. 59, p. 269. The asterisk after C. J. Readings should be deleted, and an asterisk should be inserted after J. T. Bartlett.