Page:The Zoologist, 4th series, vol 4 (1900).djvu/149

Rh hard to catch." Prof. Mcintosh, with reference to the absence of the cortex of the brain in fishes, observes, "Who has proved that the function of memory depends on the brain-cortex of the human subject? I have seen many a curious case in the pathological room, the history of which would not have have led us to this conclusion." According to Livingstone, the Hippopotamuses in the rivers of Londa, where they are much in danger of being shot, gain wit by experience; for while those in the Zambesi put up their heads openly to blow, those referred to keep their noses among water-plants, and breathe so quietly that one would not dream of their existence in the river, except by footprints on the banks." In the Leeba, Crocodiles possess more of the fear of man than in the Leeambye. The Balonda have taught them by their poisoned arrows to keep out of sight. "We did not see one basking in the sun." Nansen remarks:—"Curiously enough, one can, as a rule, get nearer to the Seal with the larger vessel than with the boats. They have learned to fear the latter, and often take to the water quite out of range, while one can sometimes bring the ship right up to the floe on which they lie before they decamp." On the solitary St. Paul's Rocks, situated between the equatorial coasts of Africa and South America, Sir C. Wyville Thomson, at the visit of the 'Challenger,' writes: "In the morning both the Booby and the Noddy were quite tame, but towards afternoon even these few hours' contact with humanity had rendered them more wary, and it was now no longer possible to knock them down with sticks or stones." Semon had a similar experience in Queensland. "On removing my camp to new hunting-grounds,