Even Scoresby, the justly renowned Right whaleman, after giving us a stiff full length of the Greenland whale, and three or four delicate miniatures of narwhales and porpoises, treats us to a series of classical engravings of boat hooks, chopping knives, and grapnels; and with the microscopic diligence of a Leuwenhoeck submits to the inspection of a shivering world ninety-six fac-similes of magnified Arctic snow crystals.