198 ON THE DISTRIBUTION OF PLANTS. 
ice. The Galapagos enjoying a — climate have 810 pheno- 
eens 174 = which are peculiar to them. Nor can these islands be 
posed ever to have peer Sena with the continents. The 
lan r marine ; abt 
bank was lifted two to three hundred fathoms, Greenland would be 
connected with Europe. Plants would freely migrate along such a 
bridge. The North Atlantic, cut off from warmer seas, would be a 
cold ocean, and under such circumstances Sc andinavia might be 
covered with an inland ice like ae okie is - found in Green- 
land. We know tha di a had i 
former i d, 
and Europe is thereby rendered more probable. This hypothesis 
is mentioned here o y to meet at the — an objection which 
might have been made to . I am abou say. 
Tn marking on a map of No orway a a whole Scandinavian 
the t e rid r pheno ous plants into 
several main groups, viz : (1) arctic species, in the most continental 
mountain regions ; (2) subereti tic, in the mountain slopes and forest 
glens ; (3) boreal, lowland plants, wey of heat, and man: h 
restricted to the inner and eastern parts; and (4) Atlantic, coast 
ae eee the moist and mild coast regions. We might 
gro 
ese 
predent what ae been said may suffice. The same groups of spe- 
cies are found also amo the mosses. The Dovrefjeld, named by 
with them. On the west cast, in the provinces of Gees 
ound many gti not yet seen in 
the eastern parts of Norway, found by E. Fries in Smaland and 
other parts of Southern Sweden, where, too, are found most of the 
phenogams and mosses Tei asterisise of the flora of Western 
rway. 
nba n tha species may migrate at once to 
distant laces. 5 but the eo a a soci aa dispersed from 
one place to another er varies, ag saan by Dr. Hult, inversely with 
the square of the distances, The seeds, moreover, are commonly 
transported only a short way nie wind, running water, quadrupeds, 
