THE GEOLOGY OF THE FAROE ISLANDS. 269 
Fig. 16. 6. shows the appearance of the dyke as seen in the roof of the cave. 
Fig. 17. Sketch-section of dyke; sea-cliff, west coast of Skuée. The cliff shown in the sketch 
is about 600 feet high. 
Fig. 18. Hill-slope near Westmannshavn, to show glaciated contour—the sharp edges of the 
basalt-beds being smoothed off. 
Fig. 19. Sketch-section, sea-shore, near Klaksvig, Boroe. 
p. Peat. 
m. Boulders, shingle, gravel, and sand. 
t. Tough hard dark blue till, with subangular glaciated stones. 
c. Tough brown laminated clay and sand, with no stones. 
Fig. 20. Sketch-section ; sea-coast, Andafiord, Osteroe. 
a. Coarse unstratified shingle, and rough earthy grit with large boulders. 
Morainic débris. 
b. Very hard, dark greyish blue till, with subangular, angular, and blunted 
stones and boulders—some of the larger ones showing striz. The deposit 
rests on a striated pavement of blue dolerite; the striz point out to sea 
or E. 40° 8. 
Fig. 21. Diagrammatic longitudinal section of Saxen Valley. / lake; v bottom of old glacial 
valley ; ss level of present stream (Giogveeraa) ; F level of fiord. 
Fig. 22, Diagrammatic section across Saxen Valley; v bottom of glacial valley; s bed of 
present stream ; d@ débris from subaerial waste of cliffs. 
Fig. 23. Diagrammatic section to show denudation of basalt-rocks, d, caused by springs creeping 
between these and intercalated layers of tuff, ¢. Talus of débris forming at base of 
cliff shown at 7. 
PLatTe XVI. 
Geological Map of Feerde Islands. The general features of the geology of the Ferée Islands 
are correctly indicated upon the map which accompanies Dr ForcHHAMMER’s paper (“Om 
Feroernes geognostiske Beskaffenhed,” Kongl. danske Vidensk. Selsk. Skrifter, 1824), of which 
the present is almost a reproduction so far as the delineation of the coal-crops is concerned. 
The dips of the strata, the dykes and veins, and the direction of strie and roches moutonnées 
are from my own observations. The coal-crops also differ somewhat from the lines given by 
FORCHHAMMER, and from those on the more recent map of Suderde by Professor JOHNSTRUP. 
VOL, XXX. PART I, 29g 
