62 



YEARBOOK, PUBLIC MUSEUM, MILWAUKEE 



[Vol. 11. 



Glacier are smooth but steeply inclined masses of ice, as shown in 

 figure 34, across which one may go without any considerable danger 

 from crevasses, but in the lower portion the ice takes on a definite 

 movement and there, large and gaping crevasses, such as that shown in 

 figure 35, are found in abundance. 



The smooth upper slopes of this ice sheet make it one of the most 

 popular of the glaciers visited by tourists, for it is possible to slide on its 

 surface for long distances without danger, and many people, seated in 

 the snow on their so-called "tin pants" enjoy the experience of a long 



Fig. 34. — Snow fields covering the upper slope of Paradise Glacier. 



snow slide, as shown in figure 36, even in the middle of an August 

 afternoon. 



In crossing this glacier to the Cowlitz Rocks, at the eastern margin 

 of the ice sheet, a number of unusual and interesting things were 

 noted. The ice surface is very free from the debris and rock material 

 which obscure so much of the ice of many of the larger glaciers, for 

 there are no overhanging cliffs or other projecting masses of rock which 

 can contribute a load of foreign material. Due partly to this fact and 

 partly to the lack of crevasses, the entire upper slope of this glacier is 

 covered during the summer by an enormous system of little surface 



