230 JRem'ews — Professor Suess — Face of the Earth. 



inferred that the movements were repeated after that epoch, and are 

 perhaps not yet ended. 



The oldest terrace is now regarded as Lower Diluvium, the others 

 belonging to the two divisions of the Middle Diluvium. This 

 classification differs somewhat from that published by Dr. Kinkelin^ 

 and makes the ten-aces contemporaneous with older stages of the 

 Alpine Glacial Series. T. I. Pocook. 



II. — Eeport on Thokianite and Thorite. By Ananda K. 

 CoomIkaswImy, B.Sc, Director, Mineralogical Survey, Ceylon. 



THIS report gives more precise details than have hitherto appeared 

 of the locality and associations of the new mineral thorianite. 

 This mineral, it will be remembered, was shown to be a new species 

 by the analysis of Mr. G. S. Blake, of the Imperial Institute, who 

 found that it contained as much as 76 per cent, of thoria and only 

 about 12 per cent, of oxide of uranium, and thus differed materially 

 from pitclablende, to which it had been at first referred. As shown 

 on a map, which accompanies the report, the principal deposits of 

 thorianite occur in and near the bed of the Kuda Pandi-oya, a small 

 stream near Kondurugala, Bambarabotuwa, Province of Sabara- 

 gamuwa, Ceylon. The mineral occurs in the bed of the stream in 

 black cubic crystals associated with zircon and ilmenite. In this 

 neighbourhood it has not yet been discovered in situ, but a few crystals 

 have been found in a pegmatite vein on Ambalawa Estate, Gampola. 

 Mr. Coomaraswamy discusses the prospect of further discoveries, 

 and we wish him success in his efforts in search of these deposits 

 of minerals rich in thoria, now so valuable as the chief constituent 

 of incandescent gas mantles. 



le E "V" I IE AAT S. 



I. — The Face of the Earth. By Eduard Suess, Professor of 

 Geology in the University of Vienna. Translated by Hertha 

 B. C. SoLLAS, Ph.D., of Newnham College ; under the direction 

 of Professor W. J. Sollas, LL.D., F.E.S., etc. Vol. I. 8vo ; 

 pp. xii, 604, with 4 maps, 2 plates, and 48 other illustrations. 

 (Oxford : at the Clarendon Press, 1904. Price 25s. net.) 



AFTER a period of more than twenty years the first volume of 

 the famous and now classic work of Professor Suess, " Da& 

 Antlitz der Erde" (1883-85), has been made intelligible to every 

 British geologist. The work meanwhile, by its broad and luminous 

 teachings, has inspired many a distinguished geologist at home and 

 abroad on all subjects connected with the surface-structure of the 

 earth, and has largely increased our knowledge of the origin of the 

 physical features in which both geologists and geographers are 

 interested. 



In the preface which the author has specially written for this 

 translation he points out naturally enough " that the reader will 

 meet, here and there, in the first two volumes, with a description, 



