Postelsia 49 
b Forest of higher altitudes. 
(100-300 meters.) 
Its not to be understood that there is ani, 
sharp demarcation line or very natural division 
between what here is designated as forests of low 
and high altitudes. The forest of the lower level 
erades into that of the higher and as these higher 
levels are reached new conditions are met with 
under which the forest assumes a different look. 
The immediate effects of the ocean and the winds 
blowing over it are not so strongly asserted, al- 
though the subtler influences permeate even to 
great distances. That less moisture reaches 
these heights is well shown by the fact that 
heavy clouds of mist hang very low, often only 
half way up the slopes. ‘That the moisture con- 
tent of the soil is much less than below is self 
evident:== he forest becomes more open. | There 
are frequent small knolls or elevations which are 
covered only by shrubs and underbrush. Again 
swamps and Sphagnum bogs occur. The trees 
which are characteristic of the forest below are 
also to be found here but with altered rank, 
