SEA-FISHERIES LABORATORY. 347 



at 7-0 a.m., we took a series of hourly observations across 

 the northern part of the Irish Sea, and arrived in Port 

 Erin Bay at 2-0 p.m. on August 31st — having traversed 

 about eleven hundred and twenty sea-miles.* 



We had taken in all, on the 32 days of the 

 cruise, 90 temperature observations and 89 readings 

 of the araometer, and 43 hauls of the tow-nets, 

 besides those of the dredges and trawls which are not 

 under consideration in this paper .f The temperatures 

 ranged during the month from 11'36° C. to 13'52° C, 

 while in the unusually warm summer of 1911 the range 

 in much the same waters was from 11'2° C. to 17'8° C. 

 The greatest salinity record in 1912 was 27 '2 

 (= 34'6 °/ 00 , corrected), " off the island of Eriskay, two 

 miles east of Binch buoy, Sound of Barra open," and 

 " four to eight miles east of Ushinish lighthouse," on 

 the east coast of South Hist, both on August 8th ; and also 

 in the Minch between East Shiant Bank and Ru Rea on 

 August 12th ; and four records of 27' 1 occur on the eastern 

 side of the Outer Hebrides; while in the Shetland cruise 

 of 1911 we got readings up to 27'6 in the open sea to 

 the east of the Shetlands on August 12th, and several of 

 27'2 to 27"4 between the Orkneys and the Shetland Isles, 

 but nothing higher than 27 in Hebridean or Scottish 

 waters. 



(For further particulars of the physical observations 

 see the list on p. 370). 



Of the sixteen deep, vertical hauls with the Nansen 

 net, seven were from 100 fathoms or over, the two deepest 

 being 145 fathoms on August 7th, " Barra Head light- 



* A glance at the Chart reproduced as fig. 1 on p. 369 will give 

 some idea of the distribution of J and and water in this most diversified 

 region. Notice especially the great extent of the chain of the Outer 

 Hebrides. 



■j- For some of the results of the bottom work see " Spolia 

 Runiana," Journ. Linnean Soc, Zool., 1913. 



