20 Bulletin Wisconsin Natural History Society [Vol. 12, Nos. 1 & 2 
Melospiza georgiana was here a dominant species. Mustela v. 
letifera dwells in the chainliers in the spha^Tinm. Uana pipiens, 
Hnfo atnericanus, Thamnophis sirtalis, Agdaius p. arctolegus, 
Melospiza melodia, Microtus pennsyltmiicus, Ondatra zibethica, 
Sorex personatus, and Blarina hrevicauda are also a part of this 
association. 
4 . The Taniarack-Bprace Association {jigs. 3 and 4). The char- 
acter of the snbstratinn of this association is much the same as 
Fig. 4. A View in the Tamarack-Spruce Association Area, Showing 
Characteristic Vegetation. 
that of the Cassandra Association — a spongy mass of sphagnum 
and roots with frequent chambers. A few of these chambers 
have fallen in, and settled, and are now occupied by open water- 
holes (fig. 5) which, together with two or three springs, may have 
some slight effect on the fauna and flora; these open waterholes, 
however^ are not extensive either in area or number. Larix 
