In the course of my researches among British Dinosaurs the kindness of Dr. J. E. Marr and Professor T. McKenny Hughes has enabled me to investigate closely the fragmentary bone which Professor Seeley described in 1874 under the new generic name of Craterosaurus. Although the systematic position of the specimen had remained problematical from the day of its discovery, nevertheless the hope was entertained that in consequence of our present more ample knowledge of Dinosaurs and fossil reptiles in general, it might now be possible to determine the exact nature of this apparently most interesting fossil. The result was rather unexpected, for it became clear that what Seeley supposed to be the base of a cranium was nothing else than the neural arch of a dorsal vertebra showing the greatest resemblance to the corresponding element in Stegosaurus.

2. The Downton Castle or Yellow Sandstones (see Figs. 2 and 3).— These occur at Lye and Turners Hill, but the best sections are at Saltwells. There the lowest beds are 10 feet of brown yellow and blue soft sandy mudstones (see Fig. 2, Ea), seen resting on the Ludlow Bone-bed, north of the Tram Bridge. Like the same zone at Ludlow, they are practically unfossiliferous.

The theory of a Cretaceo-Tertiary succession in New Zealand was first formulated by Captain Hutton in the early seventies mainly on the evidence of the Waipara sections in North Canterbury, where there appeared to be an unbroken succession from the Cretaceous into the Lower Tertiary. He correlated the Weka Pass Stone with the Ototara Stone, and in the main his views were adopted by Sir James Hector and the Geological Survey.

In view of the attention which has been drawn of recent years to the mode of origin of the purer limestones, I have been led to prosecụte some inquiries under this head on the Carboniferous Limestones of the Avon Gorge, near Bristol. I have paid greatest attention to the chemical composition of the rocks, particularly the proportion of insoluble residue remaining after treatment with hydrochloric acid; at the same time I have not wholly neglected the fossil contents, although for information on this point I have mainly relied on other observers.

Professor peach's address, as President of Section C at the recent meeting of the British Association, concludes with some interesting remarks on the geographical conditions of Cambrian time, and these may be regarded as an amplification of the views which he had previously expressed to the Royal Society of Edinburgh (1886) and in the Geological Survey memoir on the Structure of the N. W. Highlands of Scotland (1907).

Dr. M. Remeš, of Olmütz, Bavaria, recently submitted to Dr. F. A. Bather for determination, a small suite of fossils collected by him from the Tithonian of Stramberg, Moravia. Among them were two Cirripede valves which Dr. Bather kindly handed to me for identification. These two carinal valves cannot be referred to any of the described species, and, since they differ much from each other in size and ornament, I have felt myself compelled to describe them as separate species. The specimens remain in the collection of Dr. M. Remeš, but reproductions are preserved in the Geological Department of the British Museum.