338 THE FRESH-WATER LOCHS OF SCOTLAND 
I must mention that the tow-nettings from the Shetlands, the 
Orkneys, and from Lewis were taken in the same year, 1903, but North 
Uist and Benbecula were surveyed in 1904. 
Table showing Surface Temperatures (Fahr. Scale) of most of the Lochs 
SURVEYED IN SHETLAND, OrKNEY, LeWIS, NoRTH UiST, AND BeNBECULA. 
Shetland. 
Orkney. 
Lewis. 
N. Uist and 
Benbecula. 
2nd week in May 
3rd 
4th 
49-2, 51-0, 477, 
49-0, 49-2, 49-3 
52-5, 52-0 
Gl'O, 64'0, 63-0 
1st week in June 
2nd ,, 
4th „ 
56-3, 55-6 
59- 2, 61-0, 60-4, 
64-6, 59-0, 68-0, 
67-0, 66-7 
61-0, 58-8, 60-2 
60- 0, 59-2, 55-0,* 
59-2, 59-7, 55-2,* 
55-5* 
1st week in July 
2nd „ 
3rd 
4th 
55-3, 52-0, 58-5, 
56-8 
54-1,* 53-0, 54-8,* 
55- 8, 55-0, 54-4 
56- 8, 57-5, 54-8, 
58-0, 54-2 
55-5, 56-0, 54-9 
56-9, 55-8' 
56-1* 
61-5/ 61-8, 59-0,* 
56-5,* 57-Ot 
59-2, 58-0 
1st week in August . 
2nd 
3rd 
4th „ 
54-8, 55-2, 56-4, 
56-4, 53-8, 55-8, 
56 0 
57-9, 58-0 
57- 0 
60-2, 58 -0, 55-0, 
58- 5 
57-7, 57-3, 58-6 
58- 0, 60-1, 58-0, 
59- 0, 60-0, 58-2* 
59'0, 57-3, 
58-0, 58-0* 
59*2, 55-8,* 
53-1, 55-4 
1st week in September 
3rd 
64-6, 62-0 
54-6, 53-5 
* indicates a loch whose mean depth is over 20 feet, 
t indicates a loch whose mean depth is over 100 feet. 
