264 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Stat. III. 3 miles N.N.W.Bradda—Corrected temperatures. 



A pril. 

 Depth. 



9 



13 



14 



15 



9-52 



7-42 



7-62 



7-84 



— 



— 



7-47 



7-67 



6-82 



— 



— 



— 



— 



7-17 



7-37 



7-37 



7-10 



— 



— 



— 



fathoms 6-37 6-92 



"> „ — — 



10 „ 7-02? 7-47? 



15 „ 7-10? 7-58? 



20 „ — 



17 19 23 24 26 



fathoms 7-72 7-80 7-92 



5 7-04 7-69 — 



10 „ — 



15 „ 7-52 7-47 — 



7-92 



8-17 



7-70 



8-07 



7-67 



7-82 



7*65 



7-75 



20 



It will be seen that at both stations there has been a 

 stead}' and slow increase in the temperature throughout 

 the month, with one exception, on the 8th and 9th, when 

 an abnormal rise was noted, which fell during the 

 following days to the normal. The curves are, however, 

 not much broken up — that is, the minor temperature 

 variations referred to by Johnstone* have not been of 

 great magnitude, nor of frequent occurrence. This is 

 probably due to the isolated position of the Isle of Man 

 and the freedom from such disturbances as are caused by 

 a rising tide passing over heated sandbanks. 



It will be seen that the change noted on the 8th and 

 9th is of far greater magnitude at Stat. Ill, near the land, 

 than at the 5-mile station, and in fact the coldest and 

 warmest surface temperatures were observed at the 

 in-shore station. During January, February and, 

 perhaps, March the lowest temperatures will be at 

 Stat. Ill, whilst in April and the following months the 

 temperature will be on the average slightly higher (as the 

 tables for April indicate), but a succession of abnormally 



* Lancashire Sea-Fisheries Laboratory Report, i>. 73, 1908. 



