Some Notes concerning the Vegetation of Germania Land 363 



spite of a dense la^'er of stratus, and under conditions when the 

 temperature of the air was low. 



Some of the measurements prove this. On June 28 we had: — 



8 a. m. Temp. + 0-7^ Force of wind 2.3 Cloud-covering 10^^ str fr-str. 

 2 p.m. — -1-1.1° — 2.2 — 102 ni. 



9 p. m. — -I- 3.5= — 2.1 — 101-2 str. 

 and on the 29th 8 a. m. — -j- 2.6° — C — 9»-! str. 



Although the sun had not been out during the night yet in the 

 morning of the 29th at 9.45 the temperature in the main channel 

 of Vester Elven was + 7.2° and in the soil under irrigation -|- 13.0', 

 and in the air 4- 2.8°. 



This phenomenon I can only explain by the fact that the cloud- 

 covering had not absorbed all the rays of the sun so that in spite 

 of the dense layer of clouds there had been no slight supply of heat 

 simultaneously with considerable modification of evaporation. 



Fogs also continued during the month of July, in which the 

 precipitation is so very inconsiderable. But during this month 

 southerly-easterly winds are not always coincident with fogs. 



The precipitation was measured in four days, all told. The 

 heaviest rainfall occurred on the 9th and was measured as 1.1 mm. 

 Moreover it rained a little on the 12th, 13th and 14th. The maxi- 

 mum of the last 24 hours was -f- 8.8°, up to that time the highest 

 temperature of the year; the following day the fog hung again over 

 sea and land, and the temperature was low. 



Not till the 22nd does the fog rise and for the remainder 

 of the month the weather is clear, the wind principallj' in the 

 north-west. 



On July 4 the summer is so far advanced that the Snow 

 Bunting has young ones; the gnats begin to appear and around 

 Danmarks Havn Saxifraga oppositifolia is fast approaching the end 

 of its flowering-period. But at Cape Bismarck a lake is found 

 where the ice is still lying; a narrow strip of water along the shore 

 is the only visible sign of the spring not having passed over it 

 without leaving its traces. 



On July 5 the ice round the ship was so crumbly that the 

 passage was unsafe even for the dogs; and on the day following 

 the ship became free. Some little time, however, elapsed before we 

 really got some heat, and the maximum of the year, + 12.3°, is not 

 reached till the 17th; but then, on the other hand, the minimum is 

 as high as — 2.0° and of the 30 days with a positive mean tempera- 

 ture 15 are even quite frost-free. 



The hottest day of the year fell on July 31 with the highest 

 recorded temperature; the sum of the three readings of this day 



ÄLIII. 28 



