Occasional Papers of the Museum of Zoology 9 



In the Cisco Lake Region a few of the areas of timber 

 killed by the raising of the water-level have grown up to cat- 

 tail swamps. In these swamps there are many standing dead 

 trees and fallen logs as well as some areas of open water. The 

 cat-tails seem to occur mostly in those swamps having only 

 a small connection with the main body of the lake. In these 

 places the cat-tail is dominant, though numerous sedges occur, 

 and there is some sphagnum growing on the fallen logs and 

 along the shore. A few small black spruces are starting. 

 Along the edge of such a swamp a few deer-mice were taken, 

 but these were evidently stragglers from the adjacent forest. 



Willozv-thickct habitat: -Willows do not occur commonly 

 along the water margins of the lakes of the region. The only 

 place, except in clearings, where willows were noted as a defi- 

 nite growth is along the lower course of the Merriweather 

 River at Gogebic Lake. Along this part of the river there 

 are extensive growths of shrubby willows, growing (in early 

 September) in a foot or more of water. The indications were 

 that earlier in the summer the water about these plants must 

 have been at least a foot higher. Signs of muskrat were noted 

 at the edge of these willows. 



Mud-fiat habitat: Around the margin of a pond formed by 

 an old deserted beaver dam near Gogebic Lake, two miles 

 southwest of Merriweather, is a narrow strip of mud, very 

 wet and sparsely covered with a growth of low rushes. The 

 strip of muddy ground varies from about i to 4 meters in 

 width and extends a short distance up along the edge of the 

 small ditch draining into the pond. At the upper border of 

 the strip of muddy shore is a thick growth of sedges, meeting 

 the muddy shore at a fairly sharp line. 



In this habitat meadow mice are common and four jumping 

 mice (Zapus hudsoiiius) were taken. 



