1890-91.] Dr John Murray on the Temperature of Lochs. 143 
found that when the wind was off-shore, or down from the heads of 
the lochs, cold water was brought to the surface in summer; in 
winter, on the other hand, warm water was brought to the surface 
from the deeper portions of the lochs. It will he seen that when 
the sea-lochs have a depth of 80 or 100 fathoms, the warmest water 
is found at the bottom in the months of December and January, 
and the coldest water in June and July. 
A large number of temperature observations taken in the 
western lochs of Scotland from the “ Medusa ” in previous years, 
have been published and partially discussed in the Journal of the 
Scottish Meteorological Society 1 and the Scottish Geographical 
Magazine. 2 A more detailed discussion of the observations is now 
in progress, and will shortly he presented to this Society by Dr 
H. R. Mill. 
The observations were for the most part taken by myself and 
Captain Alexander Turbyne of the “Medusa,” occasionally assisted 
by gentlemen who have taken part in the work of the Scottish 
Marine Station. The results were copied from the observation 
books and prepared for press by Dr Mill and Mr James Chumley. 
1 Jour. Scot. Met. Soc., 3rd ser., Nos. iii. and iv., 1886, 1887. 
2 Scot. Geogr. Mag., vol. iv. pp. 345-365, 1888. 
