This granite forms an isolated mass, rising into two eminences a few miles south of Louisburg, called Corvock Brack (1287 feet) and Knockaskeheen (1288 feet). It is a greyish granite—generally fine-grained—consisting of quartz, two felspars,—one orthoclase, the other triclinic, probably oligoclase—and dark green mica. In some places there are patches in which the felspar assumes the appearance of “graphic granite.” Numerous boulders of this granite are strewn over the district to the north-west, and on the south side of Knockaskeheen; the rock is traversed by regular joints ranging N. 10 W., along which it splits off into nearly vertical walls. The position of the granite is shown on Griffith's Geological Map of Ireland, and it is surrounded by schistose beds, generally metamorphosed, and probably of Lower Silurian age. The granite itself is of older date than the Upper Llandovery beds, which lie to the southward.

This granite of Ballyknockan belongs to the great mass of the South-east of Ireland, which extends from Booterstown, near Dublin, to Poulmounty in Co. Carlow.

The only mention hitherto, so far as I know, of the occurrence of Starfish in British Devonian rocks is that given by Mr. Etheridge in his list of Devonian fossils (Quart Journ. Geol. Soc., vol. xxiii. p. 619), viz. Protaster, sp., and Palæaster, sp., from the Pilton beds of North Devon; therefore the discovery of a species in South Devon rocks may not be without interest.

Probably no part of England has received more careful attention from geologists than Devonshire, both North and South, but although the lists of fossils are large, the fossils themselves are often very difficult to determine, owing to the cleavage and metamorphism to which the rocks containing them have been subjected.

Having been engaged for some time in collecting and studying the organic remains of the Corniferous Limestone and Hamilton formation of the western portion of the Province of Ontario, I propose, in the present communication, to describe some of the new species which have come under my notice, these being chiefly referable to the groups of the Corals and the Polyzoa. A portion of the new material which I have collected I have already described in the “Annals of Natural History” and in the “Canadian Naturalist,” and a portion still remains for more extended examination. Some of the species here described, also, will be fully illustrated in the detailed Report on the Devonian Fossils of Western Canada, which I am now preparing for the Government of the Province of Ontario. Under any circumstances, the Corniferous and Hamilton deposits of Western Canada are so richly fossiliferous, that more extensive investigations than I have been able to carry out would certainly result in the bringing to light of numerous new forms of animal life. The total number of species comprised in my collections from these formations amounts to about one hundred and sixty or seventy, of which between thirty and forty are apparently new; but in the case of some of these the materials at present in my hands are not sufficient for description. Of this number no less than seventy-five belong to the corals, about forty are Braohiopods, and the remainder are distributed amongst the Polyzoa, Gasteropoda, Lamellibranchiata, Annelida, Trilobita, and Crinoidea.

In the summer of this year I laid before the Geologists' Association some particulars of fourteen large Ammonites which I had found in the Chalk cliffs east and west of Margate. The following is the result of three weeks' further work on these cliffs.

It was with great interest that I read in the Geological Magazine Vol. X. for June, 1873, the Rev. O. Fisher's able paper on the Formation of Mountains; and although I cannot altogether agree to his reasoning, I have to thank him for re-calculating, more correctly no doubt than I have done, my table of the altitude of domes, and also for explaining several points which I had not clearly conceived before. Nevertheless, I think that I shall be able to show that his arguments against the theory that I have advocated are not well founded.

While giving ample credit to Mr. R. Mallet for the ingenuity displayed in his novel suggestion as to the cause of volcanic energy (or Vulcanicity, as he calls it), and for the elaborate experiments and calculations which he brings to its support, Geologists have some reason to complain of the supercilious tone in which he notices, only to throw them aside as unworthy of notice, the theories of all preceding writers on the same subject, who have expressed views differing from that which he adopts. It is needless to give instances of this tone which pervades the whole paper, and must strike every one who reads it.