BY CAPTAIN F. W. BUTTON. 439 



One effect of this collapse o£ the terminal face was to form 

 crevasses for two miles up the glacier, many parts being now 

 impassable which were easily traversed formerly. 



Movement of the Glacier; and Crevasses. 



No precise measurements of the rate of motion of the ice have 

 been attempted as yet, but Mr. Huddleston informs me that a 

 large and well-mai'ked rock on the lower part of the glacier, 

 rather to the south of the middle line, has moved about 250 

 yards in the three and a half years he has known it : that is at 

 the rate of 214;j feet in a year. On the northern side of the 

 middle line of the lower part of the glacier there is a very 

 remarkable ice-cone 12 or 15 feet high, which appeared to Mr. 

 Huddleston to move very slowly until about a year ago, but 

 during the last year it has travelled about 300 feet. 



The marginal crevasses between Kea Point and Nicolo Point 

 are generally normal, forming portions of curves convex up the 

 valley ; and the same may be said of the crevasses all along the 

 northern lateral moraine as far as the terminal ice cliffs. Along 

 the southern side of the lower part of the glacier there are no 

 crevasses, except near Kea Point ; and I am informed by Mr. 

 Huddleston that in 1886 there were no crevasses on the northern 

 side, the present ones having been formed since the washing 

 away of the terminal face of the glacier by the Hooker River. 



Structure of the Ice. 



All through the lower portion of the glacier the ribboned or 

 veined structure of the ice is distinctly seen in the crevasses, the 

 white ice containing very large air bubbles. At the foot of the 

 small tributary glacier from Mount Sefton, which joins the 

 Mueller a little west of Nicolo Point, the ice is quite clear, and 

 the laminations are seen on the surface to run transverse to the 

 small glacier ; that is, in a N.E. and S.W. direction, Lower 



