4.8 



The Log of the Cruise of 1905—1906 



March 5, 

 1906. 

 Gettys- 

 burg 

 Bank. 

 The 

 current 

 meter. 



work in the morning. Most of the next day was spent in repairing 

 the trawl, hut ahout 6 p.m. it was put out in 60 fathoms on the south 

 side of the bank ; but the wind dying away completely, the trawl 

 failed to capture any fish, but a quantity of shells, coral, and sponges 

 were brought up. Leaving the buoy in position, the yacht dodged 

 round the light all night, which was found again next morning, 

 Sunday, March 4, when the trawl was put over again in 100 fathoms 

 on the east side of the bank. Suddenly passing into deep water, the 

 trawl would not keep the bottom ; consequently, amongst the mass of 

 stuff brought up, there was only one small fish in the sprat-net. 

 Centriscus scolopantime and Serramus catrilla were taken with a hand- 

 line. Later on in the day the trawl was put down in 80 fathoms, 

 when, getting fast in the bottom, it was impossible to move it, and 

 finally broke away altogether along with 50 fathoms of wire. Though 

 having spare beam and net on board, there were no spare trawl-heads, 

 and nothing remained but to go back to Gibraltar to get new ones 

 made. 



March 5 was at last a suitable day to work the current meter. All 

 previous efforts to use it were frustrated by the prevailing bad 

 weather. It requires the calmest of weather for satisfactory results, 

 and is in any case a very troublesome apparatus to use. On this 

 particular day the sea was quite smooth, with a light breeze from the 

 south — such a condition of things as but rarely occurs at this time of 

 year, even in these latitudes. 



The results of this experiment are as follows : 



t, ... j Depth in 

 Posltlon ' j Fathoms. 



Direction of 

 Current. 



Number of 

 Turns a 

 Minute. 



Velocity 



increase in 



Seconds. 



Tempera- 

 ture. 



Gettysburg Bank ... (i 2 

 Lat. 36°32'N. ... \\ 30 

 Long. 11° 55' W. ... (, 50 



W.N.W. 



w.s.w. 

 s.w. 



30 

 34 

 48-2 



11-3 

 12-2 

 15-4 



15-0° 

 144° 

 143° 



The surface current over the Gettysburg Bank appears to work 

 round a circle, running longer south-west and north-east than it does 

 in any other course. 



