SOME PHYSICAL PROPERTIES OF ICE 631 



These facts seem to show that gliding planes parallel to the base 

 of each crystal are not the controlling factor in the deformation of 

 ice and probably are not even an important factor. But instead, 

 adjustments along the contact surfaces of adjacent crystals and 

 perhaps the development of planes of weakness in the constituent 

 crystals parallel to their long axis seem more effective in the 

 process of deformation. 



