Some Notes concerning the Vegetation of Germania Land 381 



The first cover of snow in the autumn of 1907 was formed 

 during the snowstorm on September 27, after a mean temperature 

 of 4.0° for the five previous days. The lowest temperature to which 

 the vegetation until then had been exposed at Danmarks Havn was 

 — 11.6. Some days later I made measurements of the temperature 

 in the snow. 



As is shown by the above, the temperature in the snow ranges 

 downwards. The low temperature on October 15 was noticeable, 

 even the day after, at a depth of 25 cm., while the temperature of 

 the surface rose again with the rise of the temperature of the air, 

 without, however, following the latter entirely; in fact, it actually 

 presents the greatest difference from the air-temperature which I 

 have ever measured, namely 6.2''; and here there was no question 

 of a Foehn, but of a steady rise during the night until the moment 

 of observation at 10 a. m. on October 16. 



North of the station there was a large stretch of bog which, on 

 account of its superficial conditions, had been employed as a trian- 

 gulation-base from which it got the name of "Basiskæret" (the Basis- 

 bog). Towards the north it was bounded by some low "roches 

 moutonnées" at the foot of which, in the autumn, considerable 

 snowdrifts were deposited. One of these was utilized for the 

 following measurements : — 



c ^ -^ U 



21.5 



22.0 



- 23.5 — 20.5 „ „ „ snow-wall. 



As the table shows, the first of these measurements took place 

 on February 23, 1907. 



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