﻿300 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



a distance of about 1,600 feet, there is a steep ice front which is so 

 nearly parallel with the main axis of the glacier that there is a ques- 

 tion as to whether it is not its side. Here the front of the ice is 

 receding-, the amount for the last year being about the same as the 

 average maintained for the last five or six years, and this in spite of 

 an actual forward flowing movement of the ice of two to three inches 

 daily in summer and perhaps half this amount in winter. The 

 Wenckchemna glacier, in the Valley of the Ten Peaks, proved of 

 exceptional interest because of its almost unique character, only one 

 other of the type — the Malaspina in Alaska — having been described. 

 The Wenckchemna consists of a sluggish ice mass, relatively short 

 but broad, formed by the lateral coalescence of about a dozen short 

 ice streams, each of which retains its identity more or less perfectly 

 entirely across the glacier, and maintains its own nose and motion 

 independently of its neighbors. Accurate measurements to stones 

 embedded in the frontal slope showed that some of these ice streams 

 are stationary, some receding, and others advancing, the most rapid 

 advance being near the center, where freshly cut trees were observed. 

 To those who do not fully appreciate all the factors of the problem 

 it is frequently a matter of surprise that a glacier in one valley may 

 be in retreat while that in an adjacent valley may be advancing, as 

 has just been the case in the Asulkan and Illecillewaet valleys ; but in 

 the case of the Wenckchemna there is a still more varied behavior 

 in streams that are actually side by side almost throughout their 

 length. 



RECENT PUBLICATIONS OF THE SMITHSONIAN INSTITUTION 

 Continued from List of August, 1904, in Publication No. 1467 



No. Title Series Price 



1478 Smithsonian Miscellaneous Collections (Quarterly 



Issue) vol. xlvii, Part 2 (containing Nos. I479 - 



1487) M.C. XLVII .50 



1479 Britton, N. L. and Rose, J. N. Lenophyllum, a 



new genus of Crassulaceae (Quarterly Issue).. M.C. XLVII .20 



1480 Fewkes, J. W. Porto Rican stone collars and 



tripointed idols (Quarterly Issue) M.C. XLVII .25 



1481 Bartsch, Paul. Notes on the genus Sonorella, 



with descriptions of new species (Quarterly 



Issue) M.C. XLVII .25 



1482 Schuchert, Charles. On Siluric and Devonic 



Cystidea and Camarocrinus (Quarterly Issue) . . M.C. XLVII .35 



1483 Casanowicz, T. M. The Wat Chang pagoda of 



Bangkok, Siam (Quarterly Issue) M.C. XLVII .05 



