This paper gives a definitive description of the lithology and thicknesses of the Upper Middle Hecla Hoek rocks of Ny Friesland, Spitsbergen, arising out of Cambridge expeditions since 1951. The succession is the late Pre-Cambrian part of the Hecla Hoek Geosyncline, lying below the Tillite horizons and characterized essentially by limestones and dolomites.

A study of the morphometry of an ephemeral stream system which is incising itself into a terrace of the Farmington River, Connecticut, supports the regional relationship between stream-channel gradient and valley-side slope angle suggested by Strahler (1950). The continuing areal extension of the system allows stream order to be employed here as a relative measure of the passage of time. Thus it is possible to recognize that steepening and parallel development of a given valley-side slope may have their place in a sequence of early stage erosional development characterized by headward channel extension and ramification.

Two large gravel deposits, at Corran on Loch Linnhe, Inverness-shire, and at the entrance to Loch Etive, Argyll, are described, and it is considered that they are fluvio-glacial fans, marking a contemporaneous halt in the retreat of the valley glaciers which occupied the sites of these two lochs. Orientation analysis of the pebbles in the Corran deposit supports this conclusion. Similar analysis on gravels along the northern shore of Loch Etive indicates that they are not raised beaches, but were deposited in lakes held up by the glacier which deposited the Loch Etive fan.

Three camerate crinoids, Thylacocrinus(?) ignotus sp. nov., Eucalyptocrinites inchoatus sp. nov. and Hexacrinites(?) sp. are described from the lower Devonian of Toongabbie, Gippsland, Victoria, Australia.

The discovery of trilobites characteristic of the Gattendorfia Zone is described from the California Quarry, Boscastle. The possible stratigraphical implications are discussed and a comparison is made with beds of similar age at Launceston. It is suggested that there is no important stratigraphical break at the top of the Devonian and that there is a conformable passage from the Tintagel Volcanic Series into the Carboniferous. The Tredorn Phyllites are tentatively equated with the Woolgarden Phyllites. There is no evidence to support the contention that the Lower Culm contains an important greywacke sequence; these beds are probably of Upper Culm age.