316 On the Distribution of Temperature in 



The sun was very powerful all day, and its heating effect may 

 be judged from the fact that at 10 A.M. the surface water in 

 the channel off Camstradden was 58-9, and at 5.30 P.M. in the 

 same position it was 62-6 F., indicating a rise of 37 in the 

 course of the day. As an assistance to finding the positions 

 of the stations on the Chart, p. 339, 1 give the distance in nautical 

 miles in a straight line from Balloch Pier ; as a rule, they were 

 made in the deepest part of the loch in the locality. 



TABLE I. Observations in Loch Lomond, iSth August 1885. 



The distribution in series Nos. 2, 3, and 4 is graphically 

 represented in Fig. 2, and it will be seen that the curves have 

 a marked summer character. The steepest gradients are 

 between 10 and 15 fathoms. At Culness (No. 3) the fall of 

 temperature is 6-9 in this interval, or 1-38 per fathom. The 



