40 SCIENCE PROGRESS 



established the Ordovician age of the Hecla Hook in Spitsbergen, 

 by which is doubtless meant that the characteristic fossils have 

 been found in these hitherto barren rocks. 



In his latest work on the platinum regions of the Urals, 

 Prof. Duparc and his collaborator, M. N. Tikonowitch, show 

 that the source of the platinum is primarily dunite and to a 

 less extent pyroxenite {Le Platine et les Cites platiniferes de 

 VOural et du Monde. Geneva, 1920, 542 pp.). The dunite is 

 surrounded by a zone of pyroxenite, and both are enclosed in 

 great masses of gabbro. 



Mr. E. R. Stanley, the Government Geologist of New Guinea, 

 has written a very useful summary of the geology of this great 

 island, incorporating therein a large amount of new information 

 {Bull. Territory of Papua, No. i, 192 1, 15 pp.). The rocks 

 range from an Archaean complex of metamorphic rocks and 

 intrusions to Late Tertiary sediments which are strongly 

 developed in the littoral and some inland areas. The region 

 naturally shows the connection between the Indo-Malay islands 

 and Australasia. The trend lines of Suess's First Australian Arc 

 pass right along the length of New Guinea, and show a connec- 

 tion through the Waigeo and Sula island groups with Celebes 

 and possibly Borneo. 



Other notable recent contributions to regional and strati- 

 graphical geology are the following : 



Green, J. F. N., The Geological Structure of the Lake District, Proc. Geol. 



Assoc, 1920, 31, 109-26. 

 Jehu, T. J., The Archaean and Torridonian Formations and the Later In- 

 trusive Igneous Rocks of lona, Trans. Roy. Soc. Edin., 1922, 53, pt. i, 



165-87. 

 Moon, F. W., and Sadek, H., Topography and Geology of Northern Sinai, 



pt. I, Session 1919-20, Ministry of Finance, Egypt, Petroleum Research 



Bull., No. 10, 192 1, 154 pp. 

 Park, J., Geology and Mineral Resources of Western Southland, Bull. No. 23, 



Geol. Surv. New Zealand, 1921, 88 pp. 

 Ferguson, D., Geological Observations in the South Shetlands, the Palmer 



Archipelago, and Graham Land, Antarctica, Trans. Roy. Soc. Edin., 



192 1, 53, pt. I, 29-55. 

 Tyrrell, G. W., A Contribution to the Petrography of the South Shetland 



Islands, the Palmer Archipelago, and the Danco Land Coast, Graham 



Land, Antarctica, ihid., 57-79. 

 Thomas, H. H., On the Innes Wilson Collection of Rocks and Minerals from 



the South Shetland Islands and Trinity Island, ibid., 81-9. 

 Wordie, J., Shackleton Antarctic Expedition, 1914-17 : Geological Obser- 

 vations in the Weddell Sea Area, ibid., 20-6. 

 Vaughan, T. W. et alia, A Geological Reconnaissance of the Dominican 



Republic, Geol. Surv. Dominican Republic, Memoirs, 1, 192 1, 268 pp. 



Volcanology. — The Katmai volcano of Alaska, situated on 

 the continuation of the Aleutian chain, was, in June 191 2, 

 the scene of one of the greatest and most spectacular eruptions 



