Abstract
Calorimetric measurements of hailstones in Kenya, Africa, showed that 57% of the samples contained no water; these hailstones were described as hard. The average water content for the remaining samples was 4.2% almost all of these had a clear outer shell of soft ice. In Colorado and South Dakota, liquid water content of hailstones from five storms tended to decrease from an average of 14.6% for soft, small, opaque hailstones collected in June, to 0.4% for large, mostly clear hailstones collected in August.
