O. D. von Engeln — Studies on Ice Structure. 453 



Fig. 2. 



Fig. 2. lee compressed for 94 hours at air temperatures ranging between 

 — 4°F. and 20°F., under pressures up to 1400 lbs. per square inch. Photo- 

 graphed immediately after removal from copper cylinder. Note that there 

 is no distortion from the cylindrical shape. Note also the etched outlines 

 of the outcropping ends of the crystals. 



