782 Wisconsin Academy of Sciences, Arts, and Letters. 
anemone ( Anemone quinque folia L. ( ?) ) and one small tril~ 
lium. 
Another shade plant, although blooming in summer, was the- 
wild sarsarparilla ( Aralia nudicaulis L.) which was abundant. 
There may also be mentioned here a few plants of the round¬ 
leaved wintergreen ( Pyrola rotundifolia L.) ; thel last two 
plants were abundant on the main land to the south. Ferns 
were not well represented; the most abundant was the common 
brake ( Pteridium aquilina L.) whose leaves sometimes measured 
two feet across. A few plants of the interrupted fern (Os- 
munda claytoniana L.) occurred, hut the fruiting leaves had 
not been produced. 
The southeast open space. This small area in the center 
formation presented so distinct a character as to deserve some 
individual description. It is an oblong area, some ten meters 
long and half as wide, on the high land near the south-east 
point of the island, which for some reason was devoid of trees 
and almost free from shrubs. Hence the soil was dry and open 
to the sun. The place had been taken possession of by dry soil 
composites, mints, and grasses, which were in dower in late 
August. It is interesting to notice that several of these plants 
as the snake-root ( Nabalus albus (L.) Hook.), were found in 
other parts of the center hut were there unable to produce 
dowers. On the northeast side of the island there had been 
found several very small open spaces occupied by ant hills; 
upon them grew grasses hut they were usually small plants not 
in dower. On this large south-east open space, however, these 
same grasses grew large and dowered abundantly, as the red-top 
(Agrostis alba L.). In all, dve species of grasses were found 
on this small area. One rush ( Juncus dichotomus Ell.), the 
only one on the island, grew here in several examples. Golden 
rod ( Solidago canadensis L.) and sun dower ( Helianthus hirsu- 
tuS Raf.) were conspicuous, and were found also in other places 
on the east side. Very characteristic mints were Koellia 
verticellata (Michx.) Kuntze and bergamot ( Monarda fistulosa 
L.), the latter found no where else. Here grew also a few 
plants of evening primrose ( Onagra biennis (L.) Scop.) 
