26 
The N.Z. Journal of Science and Technology. 
[Feb. 
DEPOSITION OF ICE BY A GLACIER SPRING. 
By J. Hardcastle, Timaru. 
Visiting the Mneller Glacier in the middle of March this year, I met with 
a phenomenon I have not before seen. Moreover, in the course of a con¬ 
siderable amount of reading about glacier phenomena I have not met with 
mention of such a thing, or a hint of its possibility. 
The Mueller Biver was, as usual, issuing from a subaerial spring— i.e., 
not from a tunnel or cave. The spring pool occupied a small indentation 
in the terminal of the glacier—one could hardly say, in the terminal face, 
for the lower end of the glacier was much broken up and subsided for a 
length of some chains, with a high cliff-face of ice behind it. Usually the 
Ice-rimmed Spring, Mueller Glacier 
Mueller rises, as I had previously seen and heard of it, in a violent spring, 
the water jumping 2 ft., 3 ft., and 4 ft. above the surface of the pool, with 
a good deal of splashing from the contained air. On this occasion I found 
the water welling up so quietly that it made no perceptible swelling on 
the surface, and not a bubble of air broke its smoothness. The spring 
gave birth to a quite considerable stream. 
The spring at the time of my visit was remarkable inasmuch as it had 
walled itself in with deposits of ice crystals, very much as hot springs wall 
themselves in with silica, making a pool about 20 ft. in diameter, and 3 ft. 
to 4 ft. above the level of the shingle-bed upon which it discharged. The 
accompanying figure is an excellent reproduction of the spring as I saw 
it on the first visit—about the 10th of the month—with its wall of crystals 
and a portion of an inner partition wall. The photograph is inadequate 
in one respect : it does not show or suggest that about nine-tenths of the 
water escaped from the pool by the “ spout 55 at the front of the pool (to 
