113 
1908-9.] Temperature Observations in Loch Garry. 
at the east end of Loch Garry has a disturbing and damping effect, but the 
channel between the two basins is so narrow and so shallow that I do not 
think this likely. 
The lake runs almost due east and west, and the east end of the lake 
is little more than a mile from the line of the Great Glen, and the inter- 
ference of disturbances passing along Glen Garry and the Great Glen may 
explain to some extent the irregular behaviour of the lake.* 
* Since the above communication was made to the Society, I have received a copy of 
Dr F. M. Exner’s paper, “ Uber eigenttimliche Temperaturschwankungen von eintagiger 
Periode im Wolfgangsee” (Sitz. Akad. der JViss. Wien, math.-nat. Kl Bd. cxvii., Jan. 1908), 
in which the author discusses observations made by electrical means in St Wolfgangsee 
which show a temperature seiche having a period of one day. In the case of this lake there 
appear to be three fairly distinct layers of water, with the result that the oscillations are 
rather complicated. There appears to be an oscillation of the uppermost layer of opposite 
phase to the oscillation in the lowest layer, while the middle layer acts as a sort of buffer 
between the top and bottom layers. 
[Appendix — Ta bles. 
8 
VOL. XXIX. 
