370 DISCOVERY REPORTS 



from September to December (Fig. 119) combine in fact to support this view, the young swarms 

 recorded in this locality without exception showing a distinct tendency to grow more slowly than their 

 contemporaries in the Weddell zone and to attain complete adolescence at a somewhat later date. 

 And so it would appear that in the purely larval developmental phase there are three distinct growth- 



STATION 



ADOL 



FURC 6 



" 5 



., 4 

 If) 

 a 34 



2" 



U30 

 2 28 

 ^" 



~22 



ui 

 020 



< IS 



fM 

 il2 



8 



N2 EXAM- 

 -INED 



I 23 3 3444 SSS 566657789 10 MI2I6 17 18 19 2020 2I 23 25 26 26 26 26 28 2828 29 31 I 12 2 2 



2447 W294 W295 W297 W299 W30I W302W304W305 W310 1835 1837 454 459 1846 452 454 2455 457 2458 2475 471 I003 2478 



1821 1823 W296 1824 W300 1325 W303 1826 W306 1832 1836 453 455 460 461 463 2463 455 2467 469 



^^1 



Tft Tir Til in flvff ■ w/Mf ra 



Scale per cent 



O so 100 Q so 100 . . 



236 24 lOO 71 lOO 61 lOO lOO lOO 55 538 lOO lOO 100 57 100 103 608 97 39 73 

 58 291 lOO 488 lOO 321 77 224 64 50 lOO 50 lOO 45 50 48 48 52 30 IIO 



lOO 121 3IO 

 lOO 66 



STATION 



ADOL 



6 FURC 



5 ■ 



4 " u) 



34% 



32 g 



30-^ 



28 2 



26 ra 



20 o 

 18? 



12 i 



10 y 



8 



r«EXAM- 

 -INED 



STATION 



ADOL 

 FURC 5 

 " 5 



2 4 5 9 10 1314 15 16 17 17 18 19 19 21 21 21 22 22 22 22 23 23 24 25 25 25 26 26 26 27 27 28 28 29 29 30 



2479 I009 1668 483 487 491 494 W4e6 209I W4B8 2093 507 2IOO I039 1628 518 1632 523 2116 



1856 1655 481 484 488 492 I029 500W467 502 503 1624 517 I04I 2103 I630 2I09 2113 



'■iPPffllPmFTIIPT"""TT"fl'TlfT^ir 



DECEMBER 



I 3 4 7 7 8 9 19 19 30 

 2119 2128 2137 2513 539 

 I640 2136 2139 537 W496 



STATION 



ADOL 

 5 FURC 

 5 • 



Fig. ii8. Developmental condition of the massed surface larvae and small whale food in the 11-20 mm. range in 



spring. For vertical scale see legend to Fig. 107. 



rates to be considered, an extremely slow one in the East Wind drift, a somewhat faster, although 

 still rather slow, one in the north-going outflows from these high latitudes, and a rapid one in the 

 more northerly latitudes affected by the Weddell stream. 



Farther east there are two further instances of East Wind influence in the West Wind zone, 

 namely, north-east of the Ross Sea (November records) and west of Graham Land (October and 

 November records). The eastern half of the Pacific sector, well covered by our observations, 

 is barren or virtually barren of larval stages, but again all samples are outside the East Wind 

 drift. 



The developmental condition of the principal concentrations of the massed surface larvae in spring 

 is shown in Fig. 118 which, although based primarily on our pre-eminently abundant material 



I 



