Lange: REVEGETATION OF TRESTLE ISLAND. 625 
The East Section from August 14 to 16, 1899.—The great di- 
versity of plant life on this section already referred to continued 
for this season. In this diversity and in the comparative pau- 
city of trees it presented a striking contrast to the West section, 
where all true land herbs struggled under the over-shadowing 
trees. 
On the East section, peach-leaved willows dominated the 
south corner. A crescent, which under the effect of higher 
water, formed last year a dense rice marsh, with a thick tan- 
gled undergrowth of water hoarhound and mad-dog skullcap 
is now a meadow of tangled rice cut-grass (Homolocenchrus 
oryzowdes). The remainder of the section is covered by a very 
much mixed vegetation, amongst which peach-leaved willows, 
slender pink persicaria, giant sunflower, a few specimens of 
wild rice, and cattail are most conspicuous although not most 
numerous. 
The most notable changes, besides the one of the rice marsh 
to a cut-grass meadow, are the complete disappearance of 
water-lilies, wild rice, and common rush from the higher ground, 
the appearance of slender pink persicaria on well-marked areas, 
and the establishment of willow domination in the south corner. 
Not a hand’s breadth of bare soil is any longer visible on 
either section, except in deep crevices. To show clearly the 
distribution of plant life on this section in midsummer of 1899, 
I give here the result of a count made on August 16, 1899. 
I. Plants established in large numbers and forming the bulk 
of the vegetation. 
1. Peach-leaved willow (Salix amygdalordes). In the south 
corner. 
2. Rice cut-grass (Hlomolocenchrus oryzoides). On an east 
crescent. 
3. Slender pink persicaria (Polygonum incarnatum). In 
well-defined patches. 
4. Mad-dog skullcap (Scutellaria laterifolia). General 
under the taller plants. 
5. Cut-leaved water hoarhound (Lycopus americanus). 
General under taller plants. 
6. American wild mint (JZentha canadensis). General under 
taller plants. 
7. Common ragweed (Ambrosza artemisie@folia). On high- 
est ridges, where common rush grew in ’908. 
