GERMAN OCEAN, OR NORTH SEA. 



323 



in particular, the site of a house at the village of 

 Luss was pointed put to me, which is now perma- 

 nently under the summer-water-mark, while the 

 gable of another house in its neighbourhood is in 

 danger of being washed down by the increase of the 

 waters of the loch. Whether this striking appear- 

 ance (an account of which I laid before the Society 

 in the session of 1818,) is to be attributed wholly 

 to natural causes, or partly to artificial operations 

 upon the bed of the River Leven, flowing from the 

 loch, I have had no opportunity of inquiring. But 

 the great bench or flat space around the margin of 

 the loch, which is left partly dry during summer, 

 fosms altogether such a receptacle for debris, as to 

 be sufficient to affect the surface of the loch, and in- 

 deed permanently to raise its waters. We also in- 

 fer, though by a different process, that the constant 

 deposition going forward in the bed of the German 

 Ocean, must likewise displace its waters, and give 

 them a tendency to enlarge their bed and to over- 

 flow their banks or boundary. 



In this view of the subject, it will appear that we 

 have not only to account for the supply of an im- 

 mense quantity of debris, but we must also dispose 

 of the water displaced by the process of deposition 

 which is continually going forward at the bottom of 

 the ocean. 



With regard, then, to the supply of the debris of 

 which these banks are composed. — We find that a 

 very great portion of it consists of siliceous matters 



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