526 CONCLUSIONS. 
the form of a semicircle (115). The head may be held constantly 
above water as long as the animal was visible (29, 31, 92, 94, 
118), or raised and lowered at intervals (128, 129, 148). 
Sometimes, evidently when darting on some prey, the animal 
raises its whole neck quite stiff in the air: “head and neck stood 
upright like a mast” (56), “the whole neck raised above water | 
like a snake preparing to dart on his prey” (115), “the animal 
protruded its head above water to the length of about thirty feet 
at an angle of sixty degree to the horizon” (126), “a large spar 
sticking out of the water one end, and some thirty feet above 
the level of the sea” (132), “it resembled the lower mast of some 
wrecked vessel, passing rapidly’ (132), “darting rapidly out of the 
water and splashing m again, head and neck to a height of about 
twenty or thirty feet out of the water” (149, fig. 46), “head and 
neck reared about thirty feet out of water’ (151), “a neck rose 
out of the water, about twenty feet, moving with great speed” 
(152), “at first it was taken to be an immense tree floating, but 
this illusion was soon dispelled as the neck was thrown twenty 
feet in the air’ (160). 
When swimming the whole animal is not always above water, 
but may occasionally dip under without any noise, or disappear 
with a distinctly audible splash (31, 39, 41, 44, 60, 63, 69, 74, 
V4, U7; 126) 132, 1387, 1389, 140) ole Voor a): 
The speed is said to be: faster than we could row (9), rapid 
Go lisse a 97, 114, 117, 184, 137), an incredible velocity, like an 
arrow (p. 134), moderate (29), the greatest rapidity (29), a great 
rapidity (34, 138), slow (39, 115, 120, 1381, 137), much more 
rapid than whales or any other fish (48), very rapid (63, 69, 132), 
nearly still (69), very slow (83), very swiftly (94), a great swiftness 
(101), that of a light boat rowed by foor active men (117), very 
quick (123), at a great rate (137), at a rapid pace (149), a great 
speed (152), a great velocity (157) — or it was estimated at — two 
miles an hour (83, 120), three miles an hour (39), four miles 
(60), ten miles (146), ten to twelve miles (42, 138), twelve to 
fourteen miles (48), fifteen miles (41, 118, 149), fifteen or twenty 
miles (35), twenty miles (44, 156), twenty four miles (38), twenty 
to thirty miles (41), thirty miles (122, 155), thirty-six to forty-two 
‘miles (51), sixty miles (438, 50). | 
The animal may swim for a considerable time with the same 
speed , steadily and uniformly (48, 118, 134, 138, 146), or decreas- 
ing, or increasing it (29, 5!, 60, 69). 
