Structural evidence from the Ben Lui district supports Bailey's view that the hinge of a major recumbent fold can be demonstrated there. Way up evidence indicates that all the recumbent structures from the Ben Udlaidh fold upwards face towards the south-east and south-south-east. The Ben Udlaidh and Ben Lui folds are therefore synclines. The attitude and character of the folds suggest gravitational flow.

Modal analyses of nine specimens of Ghosh's Type I and six specimens of his Type II Carnmenellis granite indicate that there is no significant difference between the average compositions of these two facies.

Chemical and optical data are presented for a ferrohedenbergite separated from the Tertiary Meall Dearg granophyre of Skye. Comparison is made with similar pyroxenes crystallizing in the later stages of the Skaergaard intrusion.

The relations of the genera Torynifer Hall and Clarke, Phricodothyris George, and Kitakamithyris Minato are discussed, and the diagnosis of Phricodothyris emended. The phricodothyrid species of New South Wales all bear dental lamellae and a median septum in the pedicle valve. Four new species from three horizons within the Carboniferous are described.

The calciphyres and granulites near Nanjangud in Mysore were examined in detail in view of the reported occurrence in them of a remarkable assemblage of rare minerals of the Sanidinite fades. A brief field examination disclosed the absence of Gabbrolimestone contacts previously reported. The calciphyres and calc-granulites occur as layers, lenses and nodules in a group of amphibolites and hornblende granulites. Thin sections of these granulites display cataclastic textures indicative of shearing, and crushing. They are found to be composed of minerals characteristic of high grade marbles, and the absence in them of such minerals as larnite, merwinite and spurrite recorded previously, is consistent with the present field observations.

The new species Echinotiara arabica is described and referred to the family Stomopneustidae Meissner, 1903. It is compared with other Liassic species of “Stomechinus” which are considered to be congeneric with it, and its relationships with the genera Stomechinus, Psephechinus and Jeannetia are discussed.

The cardinal process in the Productidae is divided into two main types, either bi- or trilobed. The process in several species, illustrating each type, is described and figured, and the development of both types compared.

As a result of the drainage contest between the Weaver headstreams and the headstreams of the Trent the west facing edge of the Potteries coalfield has been breached in a number of places, in particular at Kidsgrove. During the last retreat of the ice the Kidsgrove breach came ultimately to act as a spillway for the large lake contained between the ice and the coalfield. Before the breach was uncovered, however, a number of spillways were cut further east.

Seismic refraction surveys of the rock channels of the River Erme (S. Devon) and the Rivers Tawe and Torridge (N. Devon) suggest that at the time these were eroded the sea-level relative to land stood some 150 ft. lower than at present. Echo-sounding and sea-bed sampling off S. Devon have failed to reveal any trace of ancient channels in the sea floor at distances greater than one mile from shore.