In 1924 S. G. Gordon described as a variety of thomsonite a pink zeolitic mineral occurring as a fine crystalline powder in cavities of augite-syenite at Narsarsuk, Greenland. The material was described as orthorhombie, with two good cleavages a(100) and b(010) and a less perfect one c(001) ; no other faces were observed on the minute prismatic crystals. The refractive indices Gordon measured as ± 1.535, ² 1.537, ³ 1.545, with the optic orientation a = b, ² = ±, ³ = c, and optic sign positive. Analysis gave the figures under I (p. 307), and as these agree with the composition to be expected for a potassiferous thomsonite, apart from the high water content, Gordon regarded it as such, and gave it the varietal name kalithomsonite.

The rare mineral stichtite, a complex hydroxy-carbonate of magnesium, chromium, and iron, was defined in 1910 by W. F. Petterd on material from the Adelaide silver-lead mine, Dundas, Tasmania. Petterd's description, together with detailed optical and chemical studies by A. S. Wesley, L. K. Ward, L. Hezner, and A. Himmelbauer, were collected by W. H. Twelvetrees and issued by the Tasmanian Department of Mines in 1914. A new analysis of the Tasmanian material is included by W. F. Foshag in his investigation of the hydrotalcite group.

The mineral was next recorded by E. Poitevin and R. P. D. Graham from the Megantic mine, Black Lake area, Quebec; no chemical data of this occurrence are available.

Among the many beautiful rocks of Unst, the most northerly of the Shetlands, is one composed of rosettes of pale blue kyanite set in a base of glassy quartz. This rock was mentioned by Heddle, but has never been described, nor have its genetic relationships been considered. During the mapping of Unst for the Geological Survey, opportunity was afforded of examining the field-relations of these quartz-kyanite-rocks and of collecting adequate material for study. I am indebted to Sir John Flett, F.R.S., Director of the Survey, for permission to present this account. These rocks have a considerable intrinsic interest; in addition, their investigation is closely concerned with certain general problems in metamorphism, especially those connected with metamorphic differentiation. The present paper is therefore divided into two portions, the first dealing with the description and origin of the Unst rocks, and the second with more general aspects.

The local interest aroused by the discovery in 1931 of the meteorite craters near Henbury in Central Australia has led to the finding of a new meteoric iron in South Australia. This is due to the energy and enthusiasm displayed by Mr. R. Bedford of the Kyancutta Museum. According to his letter dated August 23, 1932, the mass was found in June 1932 by a farmer, Mr. L. G. Gardiner, whilst cultivating a sandy paddock 28 miles ESE. of Kyancutta. It was turned up from just beneath the surface. He describes it as weighing 72 lb., and being 17 inches long and roughly triangular in section with a thickness of about 8 inches. The mass is weathered and one face shows four Sharply cut hemispherical pits (fig. 2) averaging 1¼ inches in diameter and 1 inch in depth. The main mass is now in the Kyancutta Museum.

A meteoric stone found in 1931 by Mr. Bertram Thomas at Buwah (lat. 20° 3ʹ 10ʺ N., long. 51° 25ʹ E.) in the region of Suwahib in the Rub' al Khali, Arabia, has already been described in this Magazine. In 1932, Mr. H. St. J. B. Philby, travelling on a route some miles to the west of that followed by Mr. Bertram Thomas, picked up meteoric stones at three other places. Two of these are between 25 and 30 miles to the west of Buwah, and the third, Umm Tina, 3 miles north of Shanna, lies about 70 miles to the south.