The glaciation of the South Orkneys is very similar in its general character to that of Graham Land, and it will be convenient, before going on to the detailed description, to give a short summary of already published accounts of the glaciers of that region.

The present report deals with the whole of the Schizopoda and Stomatopoda in the Scotia collections, and with those Isopoda which were taken in localities outside the limits of Antarctica. I am indebted to the courtesy of Dr W. S. Bruce for the opportunity of examining and reporting on these collections. The report on the Antarctic Isopoda is being prepared by Mr T. V. Hodgson.

I also include a few notes on a small collection of Schizopoda which were taken by the Discovery on its outward journey to the South Pole, for the opportunity of examining which I am indebted to the kindness of Dr W. T. Calman, of the British Museum. These latter records are most appropriately included here along with those of the species which the Scotia captured on her outward journey, over very nearly the same ground.

The main purpose of the following investigation is to improve the existing Approximate Theory of Beams by bringing it into closer relationship than has hitherto been done with exact solutions of the fundamental differential equations of equilibrium. In its aim, method, and results the paper closely resembles one already published in these Transactions on the corresponding Theory for Plates (vol. xli., 1904). It is less comprehensive than the latter paper, as it deals only with a beam of circular section; but the analysis is of such a nature that the chief results can be extended almost immediately to a beam of any form of section, on the assumption merely of certain Existence Theorems.

A considerable number of Chætognatha were collected on the Scottish National Antarctic Expedition of 1902-1904. Some two or three hundred tow-nettings were examined, and about ninety yielded some of these forms. Beside the tow-netting samples there were twelve tubes of these animals taken in the vertical net or the trawl.

The fauna of the Polar regions is of deep interest to zoologists generally, that of the Antarctic specially so, and in this the Rhizopodist can justly claim his share.

Since the return of the Challenger Expedition in 1876, the later British expeditions to this area, with the exception of the Scottish National Antarctic Expedition, did but little in the way of sounding and trawling in the deeper waters of the Antarctic. Although much additional work has been carried out, and many new and rare species of the higher forms of marine life from this region have been brought to light, comparatively little has been added to the Rhizopod fauna since the results of the Challenger Expedition were published. The following pages on the Foraminifera are due to the energy and enthusiasm of Dr W. S. Bruce, F.R.S.E., and his colleagues. The genera and species here enumerated and described have been obtained from samples of deposits sent to me at intervals by Dr Bruce and Dr J. H. Harvey Pirie, collected by them, during the S.Y. Scotia Expedition in 1903-4, chiefly from the area of the Weddell Sea, where the ocean floor is covered with terrigenous deposits of Blue Mud, or (as Dr Pirie calls them) Glacial Muds and Clays.