Maech 25, 1910] 



SCIENCE 



451 



about 900 pages in quarto witli numerous 

 plates and illustrations in the text and accom- 

 panied by an atlas of 40 map-sheets, will 

 shortly be ready. It will be sent free of cost 

 to the governments of the cooperating states 

 and to the collaborators, and it will also be 

 procurable from the above-mentioned publisher 

 at a price of £3. This work wiU form the basis 

 for the discussion at the congress of the pos- 

 sibilities of the future iron and steel industry 

 to procure the raw material. 



5. The Geology of the Polar Regions. — This 

 subject will be treated in a series of special 

 lectures, of which the following have hitherto 

 been advised: 



H. Jarner : " The Geological Results of the 

 Danmark Expedition to Northeastern Greenland." 



A. G. Nathorst : " The Climatic Testimony of 

 the Fossil Floras in the Polar Regions." 



J. F. Pompeckj : " The Jurassic Deposits of the 

 Arctic Region." 



N. V. Ussing : " The Eruptive Area of Tlimau- 

 sak — Western Greenland." 



Besides, one of the geologists of the last 

 British Antarctic Expedition wiU give a re- 

 port on the geological results of this expedi- 

 tion. 



In connection with the discussion of polar 

 geology there will be an exhibition arranged 

 of the geological collections brought home by 

 Swedish expeditions from the arctic and ant- 

 arctic regions. 



The debates of the congress will principally 

 relate to the discussion of the above ques- 

 tions. Isolated lectures, of which the com- 

 mittee has been informed, will be placed in 

 one of the following sections: 



1. General and regional geology. Tectonic mat- 

 ters. 



2. Petrography and mineralogy. 



3. Stratigraphy and paleontology. 



4. Quaternary formations. Recent glaciers. 



5. Applied geology. 



In connection with the congress the follow- 

 ing excursions will be arranged: 

 A. Excursions iefore the Congress. 



1. Spitzbergen, July 25 to August 17. Leader: 



G. De Geer. 



2. Norrland (over-thrusts, eruptives, iron ore 



fields), July 27 to August 17. Leaders: 



A. G. Hogbom, Hj. Lundbohm and P. J. 

 Holmquist. 



3. Iron-ore fields of Gellivare and Kirunavaara, 



August 6-17. Leader: Hj. Lundbohm. 



4. Quaternary geology of the Tornetrask, August 



6-17. Leader: O. Sjogren. 



5. The Alps of Sarek, July 27 to August 17. 



Leader: A. Hamberg. 



6. Quaternary geology of Angermanland and 



Jamtland, August 9-17. Leader: A. G. 

 Hogbom. 



7. Peat-moors of Narke, August 10-16. Leader: 



L. V. Post. 



B. Excursions during the Congress. 



Several excursions of one day, principally in 

 the environs of Stockholm. 



C. Excursions immediately after the Congress. 



1. The Archean rocks of middle Sweden, August 



26 to September 4. Leaders: A. G. Hog- 

 bom, P. J. Holmquist, A. Gavelin and H. 

 Hedstrom. 



2. Silurian deposits of Gotland, Dalarne and 



Vastergotland, August 25 to September 6. 

 Leaders: H. Munthe, H. Hedstrom, 0. 

 Wiman and E. Warburg. 



3. Quaternary geology of southern Sweden, Au- 



gust 26 to September 8. Leaders: G. De 

 Geer, H. Munthe and A. G. Nathorst. 



4. Ore fields of middle Sweden, August 26 to 



September 6. Leaders: Hj. Sjogren, W. 

 Petersson and H. Johansson. 



5. Morphology of middle Sweden, August 26 to 



September 4. Leaders: 0. Nordenskjiild 

 and S. De Geer. 



6. Plant-containing mesozoie deposits in Skane, 



August 26-29. Leader: A. G. Nathorst. 



7. Cretaceous system in Skine, August 25-29. 



Leader: A. Hennig. 



D. Excursion in Skdne after the oonolusion of 



group C. 

 Silurian deposits, September 7-13. Leader: 

 J. C. Moberg. 



In the beginning of March the second cir- 

 cular of the congress will be sent out, contain- 

 ing full particulars about the excursions and 

 a statement of costs, etc. 



All correspondence relating to the congress 

 to be addressed to the secretary-general, Pro- 

 fessor J. G. Anderson, Stockholm 3. 



Synchronous with the Congress of Geolo- 

 gists and in intimate connection with it " The 

 Second International Agrogeological Confer- 

 ence " will be held in Stockholm. The secre- 



