CHAP. IV.] 



THE CRUISES OF THE < PORCUPINE.' 



153 



a bottom temperature of 5°- 2 C. We were thus in 

 the warm area, and the dead-cold water of the cold 

 area lying fifty or sixty miles off, with the bottom 

 at a higher level, was completely banked in. The 

 bottom temperature here corresponded so closely 

 with that of the same depth in the Ptockall Channel 

 that apparently scarcely a drop of the Arctic in- 



Fig. 26.— Zoroaster fulgens, Wyville Thomson. One-third the natural size. (No. TS. ) 



draught makes its escape in this direction. The 

 dredge here brought up half a ton of Atlantic 

 ' globigerina ooze,' a load which tested its tackle 

 and the donkey-engine to the utmost. The weight 

 of the dredge itself with the weight attached was 

 S cvvt., so that altogether the burden reached not 



