projects under the water around the floe 78 



97. Unconformity iceberg. A prominent series of crevasses is 



confined to the lower strata only 79 



98. Ice island iceberg ... 79 



99. A stranded, overturned bergy bit showing honeycombed structure 



and fused glass texture 80 



100. Ice pillar 80 



101. Lake ice. Breakup season, spring of 1939, Mackinaw, Michigan 81 



102. River ice 81 



103. Ice jam in the Allegheny River, March 1926 82 



104. Ship icing 82 



105. Ship icing 83 



106. Frost smoke 83 



107. Sastrugi, looking upwind 84 



108. Ice storm damage at Bolivar, Missouri, January 10, 1949 84 



109. Hoarfrost deposited on icicles 85 



110. Icicles formed from freezing spray 85 



XI 



