Notices of Memoirs — International Geological Congress. 133 



The author proceeds to give reasons for these views. Under a 

 heading " First and Third Ice Age," he discusses the formations 

 which have been attributed to these. There is no characteristic, he 

 says, which can be relied upon for assigning a particular Boulder- 

 olay to the Upper or the Lower Drift. 



He enumerates and discusses in detail "the Fossiliferous Drift 

 Deposits of North Germany and Denmark," classifying them as — 



(1) Lacustrine deposits : (a) Pre-Glacial, (a) Kiver, (/3) Subsidence 

 deposits (these, he remarks, collectively lie along a line which he 

 describes) ; (h) Interglacial fresh-water formations, (a) Peat-beds, 

 {ft) Diatom-beds, (7) Beds with fresh-water shells. (2) Marine 

 Diluvium or Pleistocene Drift : (a) Cimbrian Peninsula (the 

 occurrences collectively indicate an extension of the Elbe Estuary 

 100 km. inland from Hamburg, also access of the North Sea to 

 the Baltic, affecting Moen and Riigen) ; {ft) Prussian Province 

 (the occurrences collectively indicate an arm of the sea extending 

 into the heart of East Prussia). 



A folding page at the end gives the Author's Scheme of Inter- 

 pretation : — (1) Rise of the Scandinavian Archaean massif, increase 

 •of ice, and production of the Norwegian and Baltic Ice-stream. 



(2) Floes and bergs in Atlantic and Baltic, with deposit of various 

 materials. (3) Advance of ice into Germany. (4) Ice reaching 

 maximum extension in Holland, Saxony, Silesia, Central Russia. 

 Then a short period of rest. (5) Long period of melting, leaving 

 remains of terminal moraines. (6) Further retreat of the ice, 

 leaving well-known terminal moraines of the Baltic ridges. 

 (7) Retreat to the Scandinavian terra firma. (8) Circumstances 

 of to-day. A map marks the positions and natures of fossiliferous 

 localities, lines of terminal moraines, ai'eas indicating marine 

 fiubmergence, and southern limits of glaciation. E. H. 



II. — International Geological Congress. 



1. — Report of the Commission on International Co-operation in 

 Geological Investigation laid before the International 

 Geological Congress at Vienna in 1903. By Sir Archibald 

 Geikie, President of the Commission. 



HAVING been appointed at the last Congress to preside over the 

 Commission formed atParisinl900for international co-operation 

 in geological research, I wrote individually to each of the members 

 of this Commission asking them to be good enough to give me their 

 views and suggestions on the subjects submitted to our consideration. 

 To these letters I have only received two replies. I cannot 

 therefore to-day — and it is to be regretted — submit to the Congress 

 the conclusions of the full Commission. Nevertheless, the importance 

 of the subjects proposed is such that it justifies me in recapitulating 

 them to you. The questions submitted to the Commission were 

 the following: — (1) What are the branches of geological research 

 in which international action appears the most desirable; and 

 (2) what are the best means of ensuring uniformity of method in 

 the investigations ? 



