They seem to be of the humped variety, but with the hump evanescent.
A hump on the forehead probably indicates the existence of a large frontal horn.
In the Green Mountains the highest point, Mansfield, is 4364 ft.; Lincoln (4078), Killington (4241), Camel Hump (4088); and a number of other heights exceed 3000 ft.
For even when tranquilly swimming through the mid-day sea in a calm, with his elevated hump sun-dried as a dromedary's in the desert; even then, the whale always carries a small basin of water on his head, as under a blazing sun you will sometimes see a cavity in a rock filled up with rain.
It seemed that somewhat late on the afternoon of the day previous, while three of the stranger's boats were engaged with a shoal of whales, which had led them some four or five miles from the ship; and while they were yet in swift chase to windward, the white hump and head of Moby Dick had suddenly loomed up out of the water, not very far to leeward; whereupon, the fourth rigged boat--a reserved one--had been instantly lowered in chase.
A few days afterward, however, hearing a commotion in the schoolroom, I went in and found Helen on all fours with a pillow so strapped upon her back as to leave a hollow in the middle, thus making a hump on either side.
The visceral hump is low and not drawn out into a spire.
Humped cattle are widely spread over Africa, Madagascar and India, and form a distinct species, Bos indicus, characterized by the presence of a fleshy hump on the shoulders, the convexity (instead of concavity) of the first part of the curve of the horns, the very large size of the dewlap, and the general presence of white rings round the fetlocks, and light circles surrounding the eyes.
From its relative situation then, I should call this high hump the organ of firmness or indomitableness in the Sperm Whale.
Lankester in the ninth edition of this work attributed it to the pressure of the shell and visceral hump towards the right side.