4. But how is this to be attained? At first it would appear as if the methods of ice-navigation had been followed by such success, that their continued application guaranteed still greater results. The gradual advance by means of ships, from the Polar Circle to 73°, 75°, 79°, or even to 82° N.L., has been the result and is the reward of the labours of three centuries. But to reach higher degrees, from 82° to 90°, depends on other conditions than mere time. That increased experience and boldness have removed many of the inconveniences and dangers attendant on Arctic navigation is undoubtedly true, but it is also as true, that, upon the whole, _the safely and convenience of ice-navigation have more steadily increased than its successes_. Hudson, Baffin, and especially Scoresby, and even some whalers of the seventeenth century, reached latitudes which have scarcely been exceeded since, and in many cases this progress was due, not to greater boldness and experience, but rather to chance and the caprices of the ice, which “to the whaler often permitted glances into its interior, which were denied to the scientific explorer.” 5. The greater perfection of our means enables us to conduct Polar expeditions with greater facility. Instead of dissipating our strength by sending out several ships, even small fleets, amounting sometimes to fifteen ships (often not larger than the boats of a modern Polar ship), since the days of Sir John Ross, we equip one or two ships only, strongly built for their “special purpose, provided with steam-power, and with all that is desirable or requisite; and instead of despatching them for short summer cruises, we provision them, send them out for several years, and, by appropriate nourishment and the aid of medical science, protect the crews from the scourge of scurvy. In those days, when even the wealthy lived during the winter on salt beef, and English squires were obliged at the beginning of winter, on account of the scarcity of food for the cattle, to kill and salt a portion of their herd, preserved and antiscorbutic victuals were an impossibility to a Hudson, a James, a Fox, in their winters amid the ice. Those introduced by Ross—then called “Donkin’s meat”—have been greatly improved since, and through them the scurvy, which used to carry off whole crews of ships, has lost its former terrors.