86 
n. T. FERRAR. 
The minimum reading; was taken after mid-winter and the maximum occurred in 
January, and hence a considerable lag in temperature is produced by the six feet of 
ice. Temperatures at greater depths in the crevasses * show that there the lag in 
temperature is even greater, and also that the maximum temperature reached by the 
ice is far below the melting point. The following observation from a crevasse near 
the junction of the ice of South-west Arm with that from inland is of interest : — 
November 3rd, 1903, 7 p.m. Depth of crevasse 30 feet. 
Temperature of the air +20° F. ( — 6 *7° CL). 
Temperature of the ice —21° F. ( — 29 ‘4° G). 
* Drygalski, 1 Gronland-Expedition,’ 1897, Bd. i, p. 450 ; Heim, 1 Handbuch der Gletsckerkunde,’ 1885, 
p. 288 ; Nansen, Meteorological Report, 1894, 1895, 1896. 
