k 



SUBPACE PHENOMENA. 183 



Hoist, Dr. N. 0. Oin de glaciala ruUsteiis dsarne. Geol. Foren. 

 StockJwhn Fork. Bd. iii. No. 3, p. 97-112. 



Explains the origin of Ssar ; thinks they have been formed 'by 

 streams flowing on the surface of the ice, which washed out and 

 rounded the stones imbedded in the glacier. E. E. 



Hull, Prof. E. 3Ir. Judd and the Glacial Erosion of Lakes. Gcol, 

 Mar/, doc. ii. vol. iii. pp. 140, 141. 



Mr. Judd's objections (see below) have been anticipated by Prof. 

 Kamsay. Some lakes are duo to disturbance of the strata, some to 

 subsidence from the dissolving away of underlying limestone or 

 of salt. W. T. 



Judd, Prof. J. W. On the Origin of Lakes. Geol. Mag. dec. ii. 

 vol. iii. pp. 187-189. 



The glacial origin of lake-basins is not proved ; nor is it proved that 

 other agencies, or a combination of them, are incompetent to have 

 performed the work. Subterranean actions, attended by more or less 

 local surface-movements, went on side by side with, and modified the 

 effect of, subacrial forces. W. T. 



. Formation of Hock-basins. Geol. Mag. dec. ii. vol. iii. 



pp. 523-525. 

 The belief in the excavating power of ice is of various degrees. No 

 one believes that the rock-basin of the 131ack Sea is of glacial origin ; 

 the author's faith in this matter stops short of any thing that can 

 fairly be called a "lake " at all. The Cambrian beds of Sutherlandshire 

 will probably be found to have been subjected to flexures and fractures 

 more than sufficient to dam up the drainage of a highland glen. 



W. T. 



Kinahan, G. H. The Drifting Power of Tidal Currents versus that 

 of Wind- waves. Proc. Ii. Lish Acad. ser. 2, vol. ii. pp. 443-458. 

 Abstract in Geol. Mag. dec. ii. vol. iii. pp. 83-87. See also Reji. 

 Brit. Assoc, for 1875, Sections, p. 74. 

 Wind-waves do but little permanent work if unaided by tidal cur- 

 rents ; they are most powerful at the lowest ebbs. Falling tides have 

 but little driftage power ; rising tides do most, especially when aided 

 by wind. An indented coast produces countorcurrents, as do also 

 river-bars. W. H. D. 



Irish Tide Heights and liaised lieaches. Geol. Mag. doc. ii. 



vol. iii. pp. 78-82. 



Shows by tables that the spring-tide high-water-mark is not a perfect 



level round Ireland, so that an undulating raised beach does not prove 



unequal elevation. W. H. D. 



Kinkelin, Dr. Fried. Ueber die Eiszeit. [The Glacial Epoch.] 



