The specimen to which the following description applies was found by the Rev. G. Crewdson, F.G.S., of Kendal, at the base of the cliff at Huntcliff. The block in which it lay was separated from the parent rock, and had doubtless fallen from above. The occurrence in the same slab of a portion of an arm of Ophioderma Milleri and the general character of the stone leave no doubt that it is derived from the “Star-fish” bed of the Capricornus Zone.

The present writer in 1883 reviewed the history of the rocks of the Alps and the Apennines with especial reference to the geological relations of serpentine and its associates, in a paper which appeared in the first volume of the Transactions of the Royal Society of Canada, and is reprinted, revised and with some additions, as the tenth chapter of his volume entitled “Mineral Physiology and Physiography” (Boston, 1886). Therein he gave a somewhat detailed account of the labours in Italian geology of the late Professor Bartolomeo Gastaldi, of Turin, a list of whose publications on that subject from 1871 to 1878, so far as known to the writer, will there be found, including his letter to Quintino Sella, in 1878, on the general results of explorations made in 1877 (loc. cit., 458).

The genus Piloceras was founded by J. W. Salter in 1859 upon the siphuncle of a shell closely allied to Endoceras. It was supposed by Salter that the invaginated sheaths observed in the siphuncle of Piloceras “represented the siphuncle and septa combined,” the septate part of the shell not being preserved in the specimens described by him.

In the northern half of Anglesey occur several intrusions of dark hornblendic rocks, some specimens of which were placed by Henslow in the collection made by him for the Woodwardian Museum. These rocks present a type unusual in Britain, and show some peculiarities which are of considerable interest.

A few years ago Professor Bonney found on the south-west coast of the island some boulders of a rock which he described under the name of Hornblende-picrite. It was subsequently pointed out by Professor Hughes that the probable source of these rocks was to be found in certain intrusive masses near Llanerchymedd, and indeed such boulders are scattered about rather abundantly in that neighbourhood and to the south-west. The rock in question seems, however, to be the common type of the larger eruptive masses in the north of Anglesey, and brief notes on slides cut from selected specimens taken in place may be found not unprofitable. The rocks were noticed and megascopically described in Henslow's Memoir.

Two Meteorites from France have recently come into my possession from a private source, one of which, though not of a recent fall (1836), has neither been described nor chemically examined, and which I now briefly bring to notice, it being of a most rare type. The other is of a much more recent fall (1875), and is of a much more ordinary character, being similar to many other meteorites of the same class; this stone also appears not to have been described, nor has any notice of it been published. It is somewhat a remarkable coincidence that these two stones should have fallen in the same Department, although at such widely different dates, and from the data and notes I have received from careful inquiries, I now bring forward the following details of these two aerolites.

For some years past the Upper Tertiaries of England have not received such a liberal share of attention as was bestowed on them at one time by the older geologists, probably in part because of the impression unwittingly encouraged by some of the authorities in science, that little original work in the way of discovery can now be done in connection with the organic contents of the Upper Tertiary deposits, the number of species already recorded being very large.

Having been lately at St. Davids, I made some observations in relation to the Porth-lisky granite or Dimetian of Dr. Hicks, which may be worth recording in the pages of the Geological Magazine.

Perhaps it may be well for me to state that previous to my examination I had no bias whatever in favour of any of the explanations of the geology of St. Davids which have been offered by Hicks, Geikie, or Blake.