424 Wisconsin Academy of Sciences, Arts, and Letters. 
came to within three feet of the surface while in the wet sedge 
and Calam'agrostis association it was within seven and one-half 
inches of the surface. This is then a relatively dry portion of 
the marsh with at least a slightly better aeration and this is 
possibly the reason for the greater number of dicots (thirty- 
four species in all) many of which, as shown in table 2, are con¬ 
fined to this region. The plants typical of the wet portions are 
lacking here. 
Caricetum: The transect cuts this low ridge and its character¬ 
istic vegetation diagonally and passes into a nearly pure but 
rather small association that is almost entirely composed of 
Car ex stricta. This occupies a shallow but marked basin' like! 
depression about one hundred feet across. VESere but nine spe¬ 
cies are present and their relative numerical proportions are 
given in table 2. This association terminates the marsh 
abruptly at this point. 
Data for Typical Stations 
A fuller view of the vegetation of the marsh can be gained by 
a study of the data collected in the following tables, each giving 
the population of a ten foot strip or station. These tables rep¬ 
resent typical portions of the marsh and show exactly the 
grouping of species for each station. Since every other foot of 
the four inch strip was counted and each foot was divided into 
three quadrats the totals are for fifteen quadrats, or in all, an 
erea of one and two-thirds square feet. The totals for each sta¬ 
tion will be given in the first column and the frequence will be 
given in the second column. The presence of a species in a 
quadrat was considered a unit of frequency, hence, for example, 
fifteen under the head frequency means that the species named 
was present in each quadrat of the station in question. 
Lycopus Caricetum. Twenty to Thirty Feet. 
This is located close to the outer edge of the association. 
The humus and peat is about one and one-half feet deep but 
mixed with, and underlaid by, washed soil from the uplands. 
