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ANIMAL INTELLIGENCE. 
forthcoming, we must suspend our judgment with regard 
to the habits in question. The following describes what 
these habits are believed by many observers to be. 
Captain Richards, R.N., says that he saw a blue shark 
following a bait which was thrown out to him from the 
ship. The shark, which was attended by four pilot-fish, 
repeatedly approached the bait ; but every time he did so 
one of the latter rushed in and prevented him. After a 
time the shark swam away; but when he had gone a con- 
siderable distance, he turned back again, swam quickly 
after the vessel, and before the pilot-fish could overtake 
him, seized the bait and was caught. While hoisting 
him on board, one of the pilots was seen to cling to his 
side until above water, when it dropped off. All the pilots 
then swam about for a time, as if searching for their 
friend , 4 with every apparent mark of anxiety and distress .’ 1 
Colonel Smith fully corroborates this observation; but 
Mr. Geoffrey, on the other hand, saw a pilot-fish take great 
pains to bring a shark to the bait . 2 Probably the truth is 
that the pilot-fish attend the shark in order to obtain the 
crumbs that fall from his feasts, and that the cases in which 
they appear to prevent his taking the bait are without any 
psychological significance. 
With regard to the alleged co-operation of the thresh- 
ing and sword-fish in the destruction of whales, all that 
can be said is that the statements, although antecedently 
improbable, are sufficient in number not to be ignored. 
Mr. Pay appears to accept the evidence < s adequate, aud 
gives the following cases : — 
Captain Arn, in a voyage to Memel in the Baltic, gives the 
following interesting narrative : — One morning during a calm, 
when near the Hebrides, all hands were called up at 2 a.m, to 
witness a battle between several of the fish called threshers or 
fox-sharks ( Alopecias vulpes ), and some sword-fish on one side, 
and an enormous whale on the other. It was in the middle of 
the summer ; and the weather being clear, and the fish close to 
the vessel, we had a fine opportunity of witnessing the contest. 
As soon as the whaled back appeared above the water, the 
1 Cu/., Anim. Kingd . x. p. 636. 
2 F. Day s loc. cit . 
