“The Indus has been eroding severely on the right bank, about 30 miles higher up than the erosion which I told you threatened the railway at Rohri on the left bank. The chord of the curve of the bank attacked was over 2¼ miles long, and the erosion at the apex would be as much as 100 feet a day: it amounted to 3400 feet in forty days. It has given us a good deal of trouble, as with a big breach here the water would travel 120 miles before it would be forced back to the river by the hills on the edge of the deltaic deposits, and loop embankments of great length had hastily to be constructed behind the portions of the flood-embankments threatened with erosion. We succeeded with two loops, but with the third had a breach in the weak new loop; the men have been able to keep it from spreading more than 700 feet wide, and have since got it nearly under control.

During the past eighteen years I have made certain observations on the cliff formation on the east of Brighton and on the sections successively brought into view by repeated falls of the cliff. The chief item to be noted from them is, that as the cliff wears back, the base-platform of chalk grows in height, that is, the old surface of the chalk dips towards the south. Also, that the layer of sand which Prestwich found above the chalk grew thinner and thinner, until it has now completely disappeared. At the same time the raised beach has grown in thickness from 1½ feet to 12 feet.

Zoarium composed of a group of branches of equal size diverging in a fan-shaped manner in nearly the same plane from a single short somewhat stouter stem; the branches originate and increase by repeated bifurcation, which takes place at uneven intervals proximally, and most frequently near the stem where the branches also are less regularly disposed and somewhat flexuous; but further from the base the bifureation is rare and more regular, and the distal portions of the branches are nearly straight and sub-parallel or only very slightly divergent. Zoœcial openings present only on one side; zoœcia arranged in 3–4 longitudinal rows, the outer row on each side composed of regularly disposed equidistant zoœcia of equal size and placed alternately; peristomes prominent, laterally projecting out-wards as short sharply triangular spines directed forwards and situated about one to one-and-a-half times the diameter of the branches apart; zoœcia in the one or two inner longitudinal rows without prominent peristomes, opening obliquely on the face of the branches, smaller than the lateral rows, and somewhat irregularly arranged. Reverse face of branches non-celluliferous, minutely pitted.

Wind-worn Pebbles are somewhat rare in England, and accordingly it may be of interest to record the occurrence of a deposit of which they from a prominent feature. This has been met with in several quarry-sections at Hill Top, near Bromsgrove in Worcestershire, at about 350 feet above sea-level. I am indebted to Mr. Willcox, the owner of one of the quarries, for Pointing out these Pebbles to me.

The Keuper rocks of East Nottinghamshire occupy almost the whole of that part of the county, striking slightly E. of N. and W. of S., and dipping at a very low angle in an easterly direction.

The Manchester Museum contains two ‘turtles’ from the Middle Purbeck Cap and Feather Bed of Swanage which are referable to Lydekker's Thalassemys ruetimeyeri. The first of these, L. 7017, was purchased from Swanage in 1906, and consists of a carapace lacking all the marginals, but otherwise complete and undisturbed. The second, L. 9520, was obtained by the writer from a quarry some 2 miles west of Swanage in March of this year. This specimen, although crushed, is important because it retains the whole shell, both carapace and plastron, with the exception of some of the peripherals.

Since the Swansea earthquake of June 27, 1906, no strong shock has visited these islands, and, with one exception, all those felt in the years 1908 and 1909 were comparatively slight tremors. The list includes 36 earthquakes, all of them originating in Scotland. The most important were the Dunoon earthquake of July 3, 1908, and the Ochil earthquake of October 20, 1908, the latter being the strongest shock felt in that district during the present century. The remaining tremors occurred in the Ochil district, and the great majority of them would have remained entirely unknown to seismologists had it not been for the interest taken in them by Mr. W. H. Lindsay and Mr. T. J. H Drysdale of Menstrie, Mr. J. Dempster of Airthrey, and Dr. W. L. Cunningham of Alva. To the courtesy of these gentlemen I am indebted for the principal materials of this paper.