This bore, a recent trial for oil, is situated on the high moorland, rising to just over 1,300 feet above sea-level, in the south-western corner of the Cleveland Hills, where the imposing Jurassic escarpment overlooking the Triassic lowland between Thirsk and Northallerton, suddenly forsakes its northern trend to strike eastwards for about nine miles, before resuming a more northerly course towards Guisborough and the North Sea.

During field work in 1938 and 1939 some new facts were discovered about the extent of the Hessle Boulder Clay in Northern Norfolk;also a flint core was found in this deposit in the coast section near Happisburgh. As this boulder clay has not been generally recognized so far south-east as Happisburgh, its main characteristics and known geographical extent in the district will be described.

The deformation of fossils in slates has been studied by many investigators, generally with a view to obtaining data on the strain to which the enclosing rock has been subjected. In the examples previously dealt with it has been necessary to assume an arbitrary length for one of the three principal axes of strain, since the absolute dimensions of the fossils before deformation were unknown. With graptolites, however, the spacing of thecae is a specific characteristic, and, since under favourable circumstances the species of a deformed specimen may be determined by a palaeontologist familiar with the graptolite faunas of a district, comparison of the thecal spacing with that normally characteristic of the species can give a measure of the deformation in absolute units. In some instances generic determination may be sufficient for the purpose. Furthermore, since graptolite rhabdosomes are delicate structures it is reasonable to assume that the amount of deformation they indicate closely approximates to that for the rock matrix as a whole, whereas it is doubtful if such an assumption can be made with more massive fossils. Unfortunately, however, graptolites are so thin that they afford practically only a two-dimensional picture, although it is possible to obtain some data from cross-sections.

There is a lead-zinc (with subsidiary copper) metallogenic province on each side of the Vale of Eden. To the east the veins of the Alston Block are found in Carboniferous rocks and a Hercynian age is the generally accepted date of the mineralization. To the west the veins lie in the Lower Palaeozoic rocks of the Lake District. Within the latter area ore-veins associated with the Shap Granite are, by common consent, regarded as of Caledonian age. But these apart, there is a regional mineralization in the Lake District, best developed in the northern part of that topographical unit, which has also been regarded as of Hercynian age.

The tendency among some modern authors to suppress the well-known genus Stephanoceras, Waagen, 1869, is due to sundry misconceptions, combined occasionally with a complete disregard of the Rules of Nomenclature. This raises matters of general interest, and thus a review of the vicissitudes of that genus and a discussion of some related questions may be acceptable to all palaeontologists.