382 



BATYHMETRICAL SURVEY OF 



the south side of Urquhart bay, forms a picturesque and noteworthy 

 landmark. 



In his journey to the Western islands of Scotland in the autumn of 

 1773, Dr. Johnson travelled along the shores of Loch Ness, which, he 

 says, is in some places 140 fathoms deep, and he remarks further that 

 " Natural philosophy is now one of the favourite studies of the Scottish 

 nation, and Loch Ness well deserves to be diligently examined." After 

 the lapse of 130 years this has been done, and it is proposed in this 

 place to summarize the results obtained by the staff of the Lake Survey 

 during their prolonged and " diligent examination " of Loch Ness, 



FIG. 59. GENERAL VIEW OF LOCH NESS FROM BORLUM, NEAR FORT AUGUSTUS, 



LOOKING NORTH-EAST. 

 (Photograph by Mr. G. West. From " Proc. Roy. 8oc. Edin.," by yenniaxion of the Council.) 



The survey of Loch Ness was commenced 011 April 2, 1903, and by 

 the end of that month the preliminary survey was completed, but sub- 

 sequently, at various periods during the years 1903 and 1904, many 

 additional lines of soundings and numerous isolated soundings were 

 taken, some of them in connection with the work of collecting samples 

 of the deposits from all parts of the loch, others in connection with the 

 work of taking temperatures at various depths in different parts of the 

 loch. The total number of soundings recorded is about 1700, but 

 some of them have been omitted on the accompanying map to avoid 

 overcrowding. On April 1, 1903, the level of the surface of the loch 



