Assuming the blubber to be the skin of the whale; then, when this skin, as in the case of a very large Sperm Whale, will yield the bulk of one hundred barrels of oil; and, when it is considered that, in quantity, or rather weight, that oil, in its expressed state, is only three fourths, and not the entire substance of the coat; some idea may hence be had of the enormousness of that animated mass, a mere part of whose mere integument yields such a lake of liquid as that. Reckoning ten barrels to the ton, you have ten tons for the net weight of only three quarters of the stuff of the whale’s skin.
In life, the visible surface of the Sperm Whale is not the least among the many marvels he presents. Almost invariably it is all over obliquely crossed and re-crossed with numberless straight marks in thick array, something like those in the finest Italian line engravings. But these marks do not seem to be impressed upon the isinglass substance above mentioned, but seem to be seen through it, as if they were engraved upon the body itself. Nor is this all. In some instances, to the quick, observant eye, those linear marks, as in a veritable engraving, but afford the ground for far other delineations. These are hieroglyphical; that is, if you call those mysterious cyphers on the walls of pyramids hieroglyphics, then that is the proper word to use in the present connexion. By my retentive memory of the hieroglyphics upon one Sperm Whale in particular, I was much struck with a plate representing the old Indian characters chiselled on the famous hieroglyphic palisades on the banks of the Upper Mississippi. Like those mystic rocks, too, the mystic-marked whale remains undecipherable. This allusion to the Indian rocks reminds me of another thing. Besides all the other phenomena which the exterior of the Sperm Whale presents, he not seldom displays the back, and more especially his flanks, effaced in great part of the regular linear appearance, by reason of numerous rude scratches, altogether of an irregular, random aspect. I should say that those New England rocks on the sea-coast, which Agassiz imagines to bear the marks of violent scraping contact with vast floating icebergs—I should say, that those rocks must not a little resemble the Sperm Whale in this particular. It also seems to me that such scratches in the whale are probably made by hostile contact with other whales; for I have most remarked them in the large, full-grown bulls of the species.