330 University of California Publications in Zoology. \|Vou- 
as evidenced by the many old stumps to be seen in place on the 
beach below high-tide level. 
LATOUCHE ISLAND. 
Latouche Island is an elongated land mass with a northeast 
and southwest trend. It is obviously the summit of a sunken 
mountain range which parallels those ranges whose summits 
form the islands of the Sound generally. The central portion 
of the island is little broken, being chiefly a plateau of which 
the highest point reaches 2300 feet. The southeastern coast is 
very precipitous, the cliffs extending unbroken throughout its 
length. On the northwestern side the slope is more gentle, with 
considerable areas of level land about the shallow bays. The 
rock formation is similar to that of the other islands described, 
with the bedding largely vertical or oblique. There are no 
permanent snow fields of any considerable extent. Timber ex- 
tends to the summit of .the island wherever there is sufficient 
soil, but is much dwarfed at the higher altitudes. The lower 
slopes of the island are well forested with mountain hemlock, 
the tundra area beine of small extent. The flats and stream 
margins support considerable Sitka spruce, and the littoral 
strip, western hemlock. 
MONTAGUE ISLAND. 
This, the largest and highest of the islands and the only one 
possessing any peculiar species, is more isolated than any other. 
It is the weather island, and in conjunction with Hinchinbrook 
it protects the whole Sound. The mountain range which forms 
the bulk of this island is a saw-tooth ridge rising abruptly 
from the sea to an altitude of 2000 to 2500 feet. This range, 
which has the prevalent northeast and southwest trend, gives 
the island its elongated shape. The northern and southern 
portions and much of the southern slopes of Montague are well 
forested by mountain hemlock and Sitka spruce. On the north- 
west slopes the forest does not extend much above 1000 feet, 
often only to 500 feet. ‘The higher slopes are covered by per- 
manent snow beds, this being the condition on the northern 
exposures above 1500 feet. 
