12. The Arctic voyager is exposed to no disease so much as to scurvy. Its appearance among a crew exercises a most untoward influence. Its causes are still but little known; the means, however, of combating it are numerous. It is no longer the scourge it was in the days of Barentz, when he and all his men were attacked with it on the short summer excursion of 1595, or when in Munk’s expedition of 1619 all died but two. In Behring’s expedition of 1741, out of seventy-six men, forty-two were attacked and thirty died. In Tschirikoff’s summer expedition during that same year (1741), out of seventy men, twenty died. Rossmyslow, who passed the winter of 1768-69 in “Matoschkin-Schar,” lost seven out of thirteen men. When the disease gains the mastery, the utter incapacity of the expedition for further exploration follows as a necessary consequence. Lassinius, who was sent out to explore Novaya Zemlya in 1819, had to return in the height of summer, all his men having fallen down with the scurvy. This disease has been a frightful enemy to expeditions which have wintered in that region, and carried off numerous victims. All these, it is true, were miserably equipped, and depended on the medicinal virtues of the “Löffel-kraut” of that country for remedies against the disease. In 1832-33 Pachtusow, wintering in the south of the island, out of ten men lost three; in 1834-35, two more died of the same disease. In the expedition of Ziwolka and Mojsejew, 1838-39, the scurvy gained such mastery that at the end of February half of the crew were attacked, and Ziwolka himself with eight men died. Parry regarded damp, especially damp bedding, as the principal cause of the malady. During his wintering at Melville Island he found sorrel an effective remedy or palliative. He attributed the greatest anti-scorbutic effect to beer; and according to him and to most of the English expeditions, beer and wine take the place of brandy. The disease generally has a fatal issue when there has been excessive loss of blood, or when dropsy supervenes. Most of Ross’s second expedition suffered more or less from it, and the experience of that expedition showed that vegetable nourishment alone was not competent to make head against it. Ross regarded the addition of fish or seals to the ordinary diet as an effective preservative, and did not disdain the use of blubber for the same purpose. Lemon-juice, uncooked potatoes, fruit with much acidity, fresh vegetables and fresh meat, wine and yeast, exercise in the open air, and cheerfulness, have always proved sufficient to prevent its appearance, or at any rate to render it improbable. But however valuable these may be as preventives, they almost cease to have any effect when the disease has once broken out. The lime-juice must be fresh, and, like vinegar, be taken in as concentrated a form as possible. It is decomposed and useless by being kept too long, and also by the action of frost.