630 



SCIENTIFIC RESULTS OE ZIEGLER POLAR EXPEDITION 



By the time the party was ready to leave on July i the accumitlation of winter's snow 

 had disappeared from the glaciers leaving their hard, blue surfaces exposed. A lake of some 

 size had formed in one of the sags of Glacier II some 2,500 feet back from its face, and streams 

 from the melting ice were furrowing the surface in every direction. On June 25 three points 

 along the face of Glacier II were selected (a, b, and c of figure i) and their angular distances 

 from a fixed mark on Nunatak B were determined on four different dates, the theodolite being 

 set up at Station B. These measurements resulted as follows : 



Assuming the movement to be approximately normal to the lines Ba, Bb, Be, the above 

 data gives the following daily rates of flow for the intervals observed: 



and for the entire interval of 6 days 3.3 hours a mean daily movement of 0.74 foot, 0.92 foot, 

 1.23 foot for the three points selected. In other words, the face of this glacier was advancing 

 into the bay at the rate of about a foot a day. 



This result, meager enough, in that it represents an isolated case of a single glacier during 

 a short interval of time is valuable as being the only definite information, so far as known, of 

 ice movement in Franz Josef Archipelago. (Being midsummer, with the temperature between 

 + 32 and + 42 degrees Fahrenheit, the yearly movement was probably at its maximum.) 



For future reference a substantial stone mark was erected on the moraine in line with the 

 glacier face and the cliff on the farther side. Any subsequent change can therefore be readily 

 ascertained by a party visiting this locality again. 



Although the ice still remained in the small bays on July i, it was disintegrating rapidly; 

 a large water hole around Dundee Point had increased in size until it almost joined the open 

 water in Mellenius Soitnd, while a few days later the ice broke up in De Bruyne Sound. 



