The following table shows the amount of subsistence consumed per day by each man of Dr. Rae's party, in his spring journey to the Arctic regions of North America in 1854: Pemmican 1.25 lbs. Biscuit 0.25 " Edward's preserved potatoes 0.10 " Flour 0.33 " Tea 0.03 " Sugar 0.14 " Grease or alcohol, for cooking 0.25 " ---- 2.35 lbs. This allowance of a little over two pounds of the most nutritious food was found barely sufficient to subsist the men in that cold climate. The pemmican, which constitutes almost the entire diet of the Fur Company's men in the Northwest, is prepared as follows: The buffalo meat is cut into thin flakes, and hung up to dry in the sun or before a slow fire; it is then pounded between two stones and reduced to a powder; this powder is placed in a bag of the animal's hide, with the hair on the outside; melted grease is then poured into it, and the bag sewn up. It can be eaten raw, and many prefer it so. Mixed with a little flour and boiled, it is a very wholesome and exceedingly nutritious food, and will keep fresh for a long time. I would advise all persons who travel for any considerable time through a country where they can procure no vegetables to carry with them some antiscorbutics, and if they can not transport desiccated or canned vegetables, citric acid answers a good purpose, and is very portable. When mixed with sugar and water, with a few drops of the essence of lemon, it is difficult to distinguish it from lemonade. Wild onions are excellent as antiscorbutics; also wild grapes and greens. An infusion of hemlock leaves is also said to be an antidote to scurvy. The most portable and simple preparation of subsistence that I know of, and which is used extensively by the Mexicans and Indians, is called "_cold flour_." It is made by parching corn, and pounding it in a mortar to the consistency of coarse meal; a little sugar and cinnamon added makes it quite palatable. When the traveler becomes hungry or thirsty, a little of the flour is mixed with water and drunk. It is an excellent article for a traveler who desires to go the greatest length of time upon the smallest amount of transportation. It is said that half a bushel is sufficient to subsist a man thirty days.