SEA-FISHERIES LABORATORY. | 267 
On August 14th, we took a series of surface tempera- 
tures around the Island (see large figures in circles on 
chart, fig. 9), as follows :- 
(1) 10.30 a.m., off Spanish Head ALE seep otoen Us 
(2) 10.50 a.m., Bay-ny-Carrickey vet Lh anebolioy C. 
(3) 11.10 a.m., off Langness... ne sah ldo @s 
(4) 11.17 a.m., off Langness (in tidal race) ... 13-53°C. 
(5) 11.55 a.m., off Santon Point Ae td eos 00.C. 
(6) 12.20 p.m., off Douglas Head ie ... 14-00°C. 
(7) 12.50 p.m., off. Clay Head ... ois eA O62: 
(8) 1.20 p.m., off Laxey ee ... 14-49°C. 
(9) 2.0 p.m., off Maughold He: d ee e425 C: 
(10) 2.25'p.m., off Ramsey Bay Le Bop ete Sl eet OF 
(11) 2.45 p.m., East of Pt. of Ayre... Pe WASLOCC: 
(2) 2.55 p.m., West of Pt. of Ayre ... Bp pal bad OS 
(13) 3.30 p.m., Jurby Bay ae a Soe) alle C774 Op 
(14) 4.10 p.m., off Kirkmichael Loe Foca, ellen teh Bp 
fis o.10p.m., off Peel Head ... ate joc lai OF 
(16) 5.40 p.m., off Niarbyl ie ee sun) Lepr eF 
(17) 6.5 p.m., off Bradda “ ts Hog SUA LA ES) Op 
On this occasion the sea was smooth, the sun 
beneesthe wind of strength 1 to 2, N. by E., 
apd ‘hieh water was at 12.00 p.m. when _ the 
observation (7) off Clay Head, north of Douglas, was 
taken, so that we carried the tidal stream with us (either 
flowing or ebbing) nearly all the way round the island. 
Tt will be noticed that with this rising tide flowing 
northwards the coldest water (15°15°) was at the south 
end of the island off Port St. Mary and Castletown, and 
that 1t got steadily warmer going north until the highest 
point (14°49°) was reached off Laxey between high water, 
by the shore (at Clay Head) and the ‘“‘ head of the tide” 
at Maughold. From this point it fell steadily round the 
north and west sides of the island, with slight rises at 
Point of Ayre (where two currents join) and again off 
Peel (where the tides from the north and south meet), 
until at Bradda Head it reaches 13°21°—very nearly the 
temperature with which we started at Spanish Head. 
Tt must not be supposed, however, that we attach 
much hydrographic importance to a single series of 
