334 Reviews — Post-Glacial Warping in Neivfoundland. 



PoST-GrLACIAL WaRPING IN NEWFOUNDLAND AND NoVA SCOTIA. 



By R. A. Daly. Amer, Journ. Sci., 5th Series, vol. i, 1921, 

 pp. 381-391. 



TN continuation of his studies on crust-warping as a result of the 

 -^ removal of ice-load, Professor Daly in 1920 revisited Newfound- 

 land and Nova Scotia with a view to correcting and amplifying 

 previous observations. He concluded that the amount of uplift 

 at St. John's had been overestimated. It was found that a zero 

 isobase runs through the south of Newfoundland, while at the 

 northern extremity the uplift amounts to 450 feet, while in 

 Labrador on the north shore of the Strait of Belle Isle there is a 

 maximum of 500 feet ; further north the uplift appears to diminish 

 again, as at Cape St. Charles it is only about 360 feet. The average 

 gradient is about 2-5 feet to the mile. De Geer formerly placed the 

 zero isobase too far south, but his general conclusions were justified. 

 Nova Scotia has not been uplifted since the Glacial period ; on the 

 contrary, everywhere, except in the extreme north-west, there is 

 evidence of drowning. East of the Gulf of St. Lawrence the isobases 

 tend to run concentrically around the Labrador centre of glaciation, 

 but it is possible that a secondary influence of the independent 

 Newfoundland ice-cap may eventually be established. The later 

 part of the paper contains a general discussion of the evidence as to 

 the date of the movement. The rise of the coast is obviously very 

 recent, judging from the absence of wide wave-cut benches in soft 

 drift, and possibly occurred during the last three or four 

 thousand years. 



The Mineral Industry of the British Empire and Foreign 

 Countries. Imperial Mineral Resources Bureau. Gold, 

 pp. 366, 65. Platinum and Allied Metals, pp. 84, 2s. 

 Copper, pp. 203, 4s. Tin, pp. 98, 3s. Lead, pp. 95, 3s. 

 Mica, pp. 32, 2d. Sulphur and Iron-Pyrites, pp. 67, Is. C)d. 

 All published 1922. 



"IXTE have here another batch of these extremely useful bulletins, 

 '' giving in each case a synopsis of output and markets of 

 economic products during the period 1913-19. Besides the necessary 

 statistics, however, each also contains a good deal of useful informa- 

 tion as to the geology and mineralogy of the principal deposits, 

 such as cannot fail to be of great value on the scientific side, and 

 a very valuable feature is the extensive bibliography of each product. 

 In the case of copper this runs to no less than 30 pages, and in gold 

 to 20 pages. These bulletins can be obtained from H.M. Stationery 

 Ofiice, Imperial House, Kuigsway, W.C. 2, or 28 Abingdon Street, 

 S.W. 1, or from the local ofiices in Manchester, Cardiff, Edinburgh, 

 and Dublin. 



