When I noticed this species in the January Number of the GEOLOGICAL MAGAZINE (pp. 1–10, Plate I.), I had not prepared a figure of the original specimen from the Hope Collection at Oxford, which had been kindly lent me by Prof. J. O. Westwood for that purpose.

At the last meeting of the British Association certain facetted pebbles derived from the Olive group of the Salt Range, and presumably of glacial origin, were exhibited and commented on. Some doubt appears to have been expressed as to their being due to glacial action. The following notes on these pebbles and the bed they were derived from may prove of interest.

The rocks of this area have been previously described by Professor Hughes (Geol. Mag. Vol. IV.), and some notes upon the same were subsequently submitted by myself to the British Association at Yorkin1881, and published in the Proceedings of the Yorkshire Geological and Polytechnic Society (Proc. Y. G. & P. S. N.S. vol. vii.). Further work was carried on this year, incompany with a party of Cambridge geologists, under the guidance of Prof. Hughes, and I have to thank him and them for much information, and for the opportunity of examining many specimens.

The interesting note by Mr. Strahan in the Geol. Mag. for September, 1887, on explosive slickensides, reminded me of some similar phenomena which were not of unfrequent occurrence near Dent Head and Ribble Head in Yorkshire.

In the limestone quarry from which the black marble of Dent is procured the workmen found that, when they were quarrying the lower beds and struck the rock with a pick or bar, fragments flew up into the air with greater force than, could be due to their blow and in an unexpected direction.

It was my good fortune in 1884 to receive two interesting collections of fossil plants from New Zealand, for which I am indebted to the kindness of Professor (now Sir Julius) von Haast, of Christchurch, and Professor T. J. Parker, of Dunedin. In these collections seventeen localities of fossil plants are represented which belong to three formations: the Tertiary, the Cretaceous, and the Triassic formations.