228 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY, 



temperature of the water both, to the south and to the 

 north. Then again, the following day we had water below 

 12° all the way up the Sound of Jura, while at Oban, and 

 in the Sound of Lorn and Sound of Mull the temperatures 

 were mostly between 13° and 15°. Off the north-west 

 mainland to Cape Wrath the temperatures are between 

 12° and 13°, while further noith in the Orkneys, off Fair 

 Island, and off Sumburgh Head in Shetland, 14° and over 

 is reached. Higher temperatures, about 15°, were recorded 

 south of Skye around the Small Isles later in August, 

 and again in the Irish Sea when returning to the Isle of 

 Man. It is curious that the highest temperature (16*1°) 

 recorded that day (August 23rd) in crossing from the 

 North of Ireland to Port Erin was found in mid-channel. 

 This observation was repeated to ensure that no mistake 

 had been made. 



The column giving the araometer readings shows 

 that compared with water at about ...26 in the Irish Sea 

 the North Channel has 26" 5, while the neighbourhood of 

 Oban, the Lynn of Morven and the Sound of Mull show 

 lower readings of from 23 to 25. Round the outside of 

 Mull to Staifa and Iona the water is fairly constant at 

 from 26 to 26'4. In places round the Islands south of 

 Skye, and again in the Outer Hebrides round Barra, 27 is 

 reached. The water off the north-west coast of Scotland 

 is mainly between 26 and 26 '8 ; while further north in 

 the Orkneys, off Fair Island, and in the Shetlands 27 and 

 over is "reached. The highest reading is 27'6 in Bressay 

 Sound on August 12th. Although our readings are, we 

 believe, comparable with one another for the purpose of 

 such contrasts as we have made above, we wish to state 

 that we are inclined to regard them all as uniformly too 

 low, and requiring a correction applied (which we have not 

 yet determined) before they can be used for comparison 

 with other series of observations. 



