14 H. MØLHOLM HANSEN 
Vestfirdir 16.0, the North Country 16.6, and the East Country 18.0. 
There is thus an unbroken rise in the chamaephyte percentage from 
the South Country, whose chamaephyte percentage corresponds to 
that of the whole country, towards the west and north, until it at- 
tains its highest value, 18.0, in the east. It is difficult to ascertain 
what climatic factor causes this rise, and more probably we may 
assume that not one but many factors are determining. The physical 
factor which varies parallelly with the variations in life forms is 
the annual mean temperature of the oceanic surface water. This 
as we showed above, was closely correlated to the amount of Gulf 
Stream water and Polar water at the coasts. The variation in other 
climatic conditions, whether it be in the air temperature, number 
of days with frost, the coldest or warmest month, amount of pre- 
cipitation, number of days with precipitation, days with snow, frost 
or gales, does not agree nearly so well with the variation in life 
form as the temperature conditions of the surface water. 
The correlation of the biological peculiarities of the flora, more 
especially of the chamaephyte percentage, and the current conditions 
of the adjacent seas is likewise confirmed in the surrounding countries. 
Table 2 gives the biological spectra for West and East Greenland, 
calculated on the basis of the flora lists given by Ostenfeld (1926). 
The west and east coasts of Greenland are each divided into 8 
minor corresponding areas. The east coast is washed by a Polar 
current coming from the north, the Greenland Current, while the 
west coast is washed by a current coming from the south. In ac- 
cordance herewith we find that the chamaephyte percentage in the 
individual, corresponding, minor areas as well as for the two coastal 
tracts as a whole is highest in the east, lowest in the west. The 
table shows the composition of the biological spectra. Starting from 
the number of species, the chamaephyte percentage for the whole 
of East Greenland is 25.2, for West Greenland 21.6. Starting from 
the points sum, the ratio will be 28.6 to 25.2. Only South Green- 
land has a chamaephyte percentage lower than 20, viz. 18.6. 
If we pass over to the west coast of Baffin Bay and Davis Strait, 
we find that a current from the north, the Labrador Current, flows 
along the eastern coast of Baffin Land, and according to Raunkiær 
(1908), the chamaephyte percentage for Baffin Land is 30, while 
for the whole of West Greenland it was only 21.6. 
Passing from Iceland towards the east, we find the west coast 
of Norway washed by the warm Gulf Stream, and here, as a matter 
