Discovery reports (1964) Discovery reports discoveryreports32inst Year: 1964 THE OLDER STAGES 143 reason they avoid the latter. It certainly cannot be that it is taken but rejected wholesale by the baleen plates, for growing as it does up to 30 mm. long it is much too big for that. It is bulky besides, being broader in the beam than the slender krill. We do not of course know if the baleen whales can in fact tell one colour from another. It has been suggested, however (Mann, 1946), that colour vision in these animals is a possibility. Z 36 OCTOBER NOVEMBER 19 23 25 30 4 7 9 IS 16 18 22 28 I
Discovery reports (1964) Discovery reports discoveryreports32inst Year: 1964 THE OLDER STAGES 143 reason they avoid the latter. It certainly cannot be that it is taken but rejected wholesale by the baleen plates, for growing as it does up to 30 mm. long it is much too big for that. It is bulky besides, being broader in the beam than the slender krill. We do not of course know if the baleen whales can in fact tell one colour from another. It has been suggested, however (Mann, 1946), that colour vision in these animals is a possibility. Z 36 OCTOBER NOVEMBER 19 23 25 30 4 7 9 IS 16 18 22 28 I 2 5 9 P 17 19 28 3 4 5 8 KD 12 I Scale percent â | I | i I 1 T °°° I '1 iiiii 30 40 40 40 40 40 40 40 40 40 40 70 49 216 27 III 58 37 I20 97 40 40 40 20 40 40 18 37 42 55 99 79 702 61 9 40 lOO lOO I03 NO 42 3IO 40 40 40 30 216 100 lOO 100 100 lOO 52 280 27 189 48 379 61 113 40 116 40 116 588 325 522 DATE 68 64 60 55 \ 52 i 48 ' 44 I 40 â » 36 z 24 a 20 I 16 U 12 ' I DATE 68 64 to 60 O 56 cr O 52 2 48 s ' . 36 O 32 < 28 ' 24 f 20 O 16 ::i 12 S o FEBRUARY 13 19 20 23 31 2 3 6 II 12 13 14 18 22 23 24 28 I MRCH
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