162 
Proceedings of the Royal Society 
meteorological work. I do not know whether it has been employed 
before for the purpose. 
The daily range of temperature is not known. It is believed not 
Table Y. 
June to September. 
Month. 
Station. 
Surface. 
Inter- 
mediate. 
Bottom. 
June, .... 
Y. 
52*4 
51 -3 
50-9 
July, .... 
57-8 
54-2 
54*2 
September, 
55-3 
54-9 
55*3 
Mean, 
55-2 
53-5 
53-5 
June, .... 
YII. 
51-0 
48-5 
48-0 
August, .... 
9 9 
57 '8 
54-2 
54-2 
September, 
9 9 
55-0 
54-2 
54-0 
Mean, 
54-6 
52*3 
521 
June, .... 
August, . 
XII. 
50-9 
47-4 
47*7 
9 9 
54*3 
53-6 
54-0 
September, 
99 
54-5 
54-3 
541 
Mean, 
53-2 
51-8 
519 
October to April. 
October, .... 
Y. 
52-4 
52-6 
52*5 
November, 
9 9 
47-7 
491 
491 
December, 
9 9 
41-2 
42-3 
42-6 
January, .... 
38*8 
39-4 
39-5 
March, .... 
99 
41-0 
40 '3 
40-3 
Mean, 
44-2 
44-7 
44*8 
October, .... 
YII. 
527 
52-8 
53-0 
November, 
9 9 
48-3 
49-4 
49-4 
December, 
9 9 
41-7 
42-2 
431 
Mean, 
47-6 
481 
48-5 
to exceed 1° in the open sea, hut in shallow or muddy water it must 
he much greater. In the intensified conditions of the Gran ton 
Quarry, the greatest daily range observed during September, October 
