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I. Tim HJ&ILOCiC CL mAX 
This is apparently the most mesophytic formation 
of the region. Its most typical development is on the lower 
half of the north slope of the first range. It is composed 
largely of three tree species: Tsuga canadonsis (L.) Carr, 
(hemlock) , Acer ^accharum Harsh, (sugar maple) and Betula 
lutea Michx. f. (yellow birch). At the lower levels near 
the lake shore, the forest is almost entirely hemlock:, while 
near the top of the ridge it mergest into the less mosophytic 
maple forest. 
Intensive studies were made at various points in 
the forest with a view to determining the relations between 
the three principal species. The life habits of each, from 
the seedling stage up, were studied as closely as time 
permitted. Interrelations of the species were also studied 
by means of quadrats and windfall areas. 
A. Aspect of the Forest. 
At first sight the forest appears to be almost 
a pure stand of hemlock. The boles are conspicuous below, 
but the upper portions of the trees, which are 25-30 m. or 
mere tall, form a dense mass of interlaced foliage, with a 
ragged skyline. Here and there are occasional trees of 
yellow birch, with more open tops; also a few tall spindling 
maples, devoid of foliage, excepting near the summit, and 
