We may summarize our chief conclusions as follows:—

(1) The brachiopod-bed of Shenley Hill, as described by Messrs. Lamplugh & Walker, who referred it to the Lower Greensand, is shown by stratigraphical and palæontological evidence to be of a composite character. Its constituent parts belong respectively to the basement-bed of the Upper Gault and to the basement-bed of the Cenomanian stage, as understood by English geologists (sub-zone of Catopygus columbarius).

(2) The Cenomanian bed is present in the form of isolated lenticles of limestone. Although no comparable stratum can be found at the present outcrop, which has receded from the area where conditions produced this particular type of deposit, the bed has a close lithological counterpart in Northern France (Matringhem), where there is an almost identical bed at the base of the varians zone.

(3) At Harris's Pit the Cenomanian bed, an inconstant layer of Upper Greensand formerly seen above it, and an overlying mass of Gault Clay of rostratus age are in an inverted order of succession. There is a junction of erosion and non-sequence between the Gault and the Cenomanian bed.

IN 1899 the Cambridge Exploring Expedition to the Malay Provinces of Lower Siam collected a few fossils and many rock-specimens at a place named Kuan Lin Soh, in the Patalung district. A small broken image of Buddha from the temple of Bah Nah containing some similar fossils was considered to have been quarried from the same beds, and it was believed that these specimens represented strata of Cretaceous age.

At the end of a valuable paper on the superficial deposits to the north and north-west of London, Mr. Barrow puts forward certain views as to the origin of escarpments and transverse rivers in the Chiltern Hills and the Weald which can hardly be allowed to pass unchallenged by those interested in the progress of geomorphology, for unless there is more evidence in their favour than has yet been produced these views are not progressive, but distinctly reactionary. To sum up the position in his own words (op. cit., p. 47): “Long after the cessation of all the bending movements which produced the present structure of the Thames Valley, there was a fall of sea-level or a rise of the sea-bottom that brought the beds within reach of marine erosion.

THE well-known and highly sensitive tests afforded by ferricyanide, ferrocyanide, and thiocyanate solutions for the detection of iron may be adapted, at the cost of a little trouble, to the microchemical investigation of certain rocks in thin section, as can also the equally well-known fusion test for manganese. The following methods have proved useful in special circumstances of the nature indicated in each case.

THROUGH the kindness of Mr. Henry Woods, I have had the opportunity of examining three blocks of limestone belonging to the Sedgwick Museum at Cambridge, which were collected by the late E. B. Tawney, from the “Chara Bed”, Étage Oeningien, Upper Miocene, at Locle, Jura (Canton Neuchatel, Switzerland). The blocks contain a number of the remains of fruits of a species of Charophyte, which present a feature I had not hitherto observed, and to which I think attention may advantageously be drawn. Before describing this peculiarity, however, it will be desirable to say something as to the conditions of preservation in which such bodies are usually found.