268 TRANSACTIONS LIVERPOOT, BIOLOGICAL SOCIETY. 
surface temperatures such as these, unsupported by 
salinities and uncorrected by further observations on 
neighbouring days under other conditions of weather. 
On August 15th we were trawling on the Ballaugh 
Bank, and took a series of observations up to a point ten 
miles north of Peel, as follows :— 
(1) Off Peel Head, Surface = 13-70°C. 
(2) 2 miles N. of Peel, Surface = 13:55°C. 
(3) 35 miles N. of Peel, Surface = 13-05°C. 
(4) 835 miles N. of Peel, Surface = 13-81°C. 
(5) 10 miles N. of Peel, Surface = 14-04°C. 
10 miles N. of Peel, at 24 fathoms 12-87°C. 
10 miles N. of Peel, at 6 fathoms 12-32°C. 
10 miles N. of Peel, at 13 fathoms 11-39°C. 
10 miles N. 
of Peel, 
at 22 fathoms (bottom) 11-39°C. 
The sea was smooth, sun bright, wind E., of strength 
Oe 
miles N. 
It is evident that, on this day, at this point ten 
of Peel the water was warmest on the surface, 
and was fully two and a half degrees Centigrade lower at 
13 to 22 fathoms. 
On lith, 
samples of the sea-water were taken at the following 
points between Port St. Mary and Niarbyl :— 
September surface temperatures and 
(1) 10.20 a.m., 1 mile off Port St. Mary ... larg: 
(2) 10.50 off the Chasms mE 13°C. 
(3) 11.0 S. of Calf Sound (ebb northw ard beginning) 13-1°C. 
(4) 11.11 N. of Calf Sound 12-8°C. 
(5) a0 off Bradda Head 13°C. 
(6) 12 (noon) otf Niarby| 12-85°C. 
The sea was moderate, with a heht N.N.E. wind and 
bright sunshine—after some days of rough weather. 
The surface water was on this occasion (September 
llth) distinctly colder than we had found it on either 
August 14th or August 15th in the same neighbourhood. 
In addition to the occasion on August 15th, given above, 
when sea-temperatures were taken at intervals from the 
surface to the bottom, there were four other vertical series 
ot temperatures taken during August and September in 
