THE Millstone Grit described in this paper forms a belt of country about a mile wide, stretching from west-north-west to east-south-east across the north of the Gower Peninsula. Reference is also made to small areas of Millstone Grit preserved in synclines at Oxwich and Porteynon on the south coast of Gower. These areas form the most important outcrops of this formation on the south of the South Wales Coalfield. Further east the Millstone Grit is thinner and it is not exposed for some miles to the east of Swansea Bay, as it is concealed by Mesozoic rocks.

SOME time ago Mr. Charles Edmonds provided me with a number of sandstones of Carboniferous age from West Cumberland to compare with the sandstones of the Peel Series in the Isle of Man. These specimens proved to have an interest peculiar to themselves which it is the purpose of this note to describe.

In the paper by Dr. G. D. Osborne upon “Contact Metamorphism and Related Phenomena in the neighbourhood of Marulan, N.S.W.”, which appeared in the July number of the GeologicalMagazine, the sentence on page 305, line 23, beginning “It must be remembered . . .” should have read:—

It must be remembered in dealing with the present, or any analogous case, that lowering of temperature in the magma follows its intrusion, with resulting crystallization, which is accompanied by endothermic reactions in the aureole.