Toward the close of the winter there came sickness, chiefly on account of a lack of proper provisions. Late in the fall Lieutenant Oliver had left Prairie du Chien with supplies in a keel boat. But the river froze and the boat was unable to progress farther than the vicinity of Hastings, Minnesota. Here it was necessary to keep a guard all winter to protect the food from the Indians and the wolves. The Indians refused to sell them game; no vegetables could be purchased; and the bread was "two inches in the barrels thick with mould".[74] With such food it is no wonder that scurvy, the dreaded disease of all frontier posts, broke out among the troops. Forty soldiers died before the progress of the disease was arrested by home-made remedies and groceries brought up by the sutler.[75] This visitation of disease left a profound impression upon the survivors. Henry H. Sibley, who had often spoken with those who passed through the weary months of suffering and sickness, wrote that "scurvy broke out in a most malignant form, and raged so violently that, for a few days, garrison duty was suspended, there being barely well men enough in the command to attend to the sick, and to the interment of the dead. So sudden were the attacks, that soldiers in apparent good health when they went to bed, were found dead in the morning. One man who was relieved from his tour of sentinel duty, and stretched himself upon the bench of the guard room, four hours after, when he was called upon to resume his post, was discovered to be lifeless."[76] Thinking that much of the sickness was caused by the unhealthful location, Colonel Leavenworth, on May 5, 1820, moved the soldiers to a place on the west bank of the Mississippi north of the Minnesota where there was a great spring of cold water. Here the troops were quartered in tents--naming their community "Camp Cold Water".[77] The immediate need was the erection of the permanent post. Colonel Leavenworth chose for the site a position three hundred yards west of the crest of the cliff. Some material was brought to this place, but no building was done. In August Colonel Leavenworth was superseded in command by Colonel Josiah Snelling, who located the position at the extreme point of land between the Mississippi and Minnesota rivers.[78] The work of erecting the buildings was done by the soldiers, it being customary at that time to pay the soldiers fifteen cents a day in addition to their regular pay for this extra work.[79]