56 
Proceedings of the Royal Society 
-i. .Note on the Distribution of Temperature under the Ice in 
Linlithgow Loch. By J. Y. Buchanan, M. A. 
The following observations of the temperature of the water at 
different depths below the ice covering Linlithgow Loch were made 
with one of Messrs Negretti & Zambra’s “ half-turn ’* self-register- 
ing thermometers, which proved to he a useful instrument for this 
species of inquiry. It was necessary, however, to fit it with a 
suitable inverting contrivance, as this part of the apparatus supplied 
by the makers is quite useless. The temperatures have received a 
provisional correction for error of graduation, and they may still 
have to receive a further, though certainly very slight, rectification, 
when a thorough comparison with a Kew standard has been made. 
The results are given in the table, to which are appended particulars 
of position and date corresponding to the stations. 
Depth, Feet. 
Temperature, Fahrenheit, at Station 
No. 1, 
No. 2. 
No. 3. 
No. 4. 
3 
34 ‘90 
35-90 
6 
35-25 
36-10 
36-00 
36-30 
12 
37-15 
36-80 
36-85 
36-80 
Bottom, . . 
16 
37-40 
Mud, . . . 
16 
37-80 
Bottom, . . 
38-50 
18 
36-95 
36-90 
24 
37-30 
37 "30 
30 
37-40 
37-40 
36 
37-60 
37-70 
42 
38-40 
44 
38-60 
Mud, . . . 
46 
39-85 
Mud, . . . 
47 
39*75 
Particulars of Stations. — No. L Position approximately 70 or 80 
yards from the steep hank below the Palace, which hears about 
S.S.E.* Ho actual hearings were taken, as my object was to test 
the action of the thermometer. — Date 6th January 1879. 
* The bearings given are magnetic, and were taken with a pocket azimuth 
compass. 
