"Esth June 17 North Greenland Sunday It may not be out of place to remark that the hole which I cut through the ice in June 10 the ice then measured 40 inches in thickness. To day June 17 measure the ice at some hole but was not satisfied with it and took the measure from the bottom to the surface of the water formed at 18 be 60 inches; Then cut another hole through within 2 feet of it and found the ice measured from bottom to the water edge only 60½ inches and 65 ¼ inches to top of ice. These leads are to think that after the hole is cut through at the time that the ice begin to melt on the surface and comes down the hole I being more fresh I think it freer at the bottom of of the hole much as a spring of water coming up out of the gravel on the winter trails forming a mound around it, the hole that is cut through becomes smaller at the bottom. I mention this & show that correct measurement can not be depended on by keeping a hole open and taking the measure each day or period of days"