107 
1908-9.] Temperature Observations in Loch Garry. 
observations were made at one end of the lake for consecutive days and 
nights on 10th and 11th July, and again from 23rd to 25th July. These 
observations are shown in figs. 2 and 3, and that there is an oscillation 
in progress with a period of about twelve hours is apparent. The 
7 8 9 10 II 12 13 14 15 16 /7 18 19 20 21 22 23 24 ^! 2 54-56789 !0 1/ i2 !3 14 15 IS 17 18 HOURS, 
V v ^ — - ■ V f 
LOCH GARRY 1908 10™ JULY II th JULY 
EAST END OF LOCH 
Fig. 2. 
oscillations may appear to be very irregular, but the wonder is that they 
should exist at all, when the indefiniteness of the discontinuity is taken 
into consideration. 
The majority of the observations were made at the centre of the lake, 
and thus at the node of the temperature seiche. Temperature oscillations 
