The Lower Devonian Fish-Fauna of Campbellton, New Brunswick, has already been described by Mr. Whiteaves, of the Canadian Geological Survey, and Dr. Traquair, of Edinburgh; and a few supplementary observations are published in the British Museum Catalogue of Fossil Fishes, Part II. (1891). Much, however, still remains to be learned concerning the skeletal anatomy of the genera and species already determined; and many types of early fishes will doubtless soon be discovered by future explorers of the formation and locality in question. A new series of specimens just received by the British Museum from Mr. R. F. Damon, of Weymouth, adds some small items of interest to our knowledge of the subject; and the following notes relate to the advance thus made. The fossils under discussion were collected last summer by Mr. Jex, and are all much crushed and flattened in the usual manner.

I Venture to offer some remarks on the above-mentioned paper of Prof. Bonney, which appeared in the Quarterly Journal of the Geological Society for May, 1890 (vol. xlvi. pp. 187–240). As the result of ten years' geological researches in the St. Gothard district, I have become familiar with most of the statements and arguments brought forward by Prof. Bonney; many of them, I am glad to see, agree with my own observations and views, already made known in official and other publications; others, however, I feel bound to dispute.

In his recently published excellent Memoir on the “Fauna of the Lower Cambrian or Olenellus Zone,” Mr. Walcott has referred briefly to the presence of the fauna in Wales. The following additional facts bearing on the question may therefore be of some interest, and they will, I think, show that there is strong evidence in favour of the conclusion arrived at, that the Olenellus fauna occurs in the Caerfai Group of St. Davids, and in beds at the same horizon in North Wales.

Mr. Mellard Reade's book on the “Origin of Mountain Ranges” has now been before the geological public for five years; it has been reviewed in this Magazine and elsewhere, and several more or less weighty objections to the theory have been put forward; but no very complete examination of it has been attempted. This may be partly due to the manner in which Mr. Reade has presented his theory, for he has certainly been too diffuse over points which require very slight illustration and not nearly explanatory enough on other points of great physical difficulty.

The vexed question of the affinities of the fossil organisms known as Xanthidia—a question which only experienced zoologists and botanists can hope to solve—will not be discussed in this short paper, my intention being merely to show that these interesting organisms are not confined (in England) to the Chalk flints and Grey Chalk, but exist in the London Clay, and to give a short account of the means of isolation and of the appearance of these minute fossils.