1 6 University of Michigan 



the grassy fields and the woods bordering grain fields, and is 

 commonly found in shocks of corn. The amount of damage 

 done by it in this county must be very great. 



Zapus hudsonius hudsonius. Jumping Mouse. — A few occur 

 in the county. We have records for Ann Arbor, Portage 

 Lake, and Whitmore Lake. In October, about 1880, in Lodi 

 Township, a female jumped from a shock of corn that was 

 pulled over, and when caught, after several jumps of two feet 

 or more, was found to have three small young attached to 

 her teats. 



Erethizon dorsatum dorsahim. Canada Porcupine. — The 

 first settlers found porcupines were common in the county. 

 My father killed one in 1855 in Lodi Township, and the last 

 one known in the county was killed near Saline in October, 

 1868, by John H. Bortle. 



The porcupine lives on the buds and bark of several species 

 of trees, and also eats the stems and leaves of water lilies. 

 It is a clumsy and stupid animal, knowing under natural con- 

 ditions neither fear nor haste. Its coat of sharp-barbed quills 

 affords almost complete protection from nearly all enemies 

 except man, who alone is responsible for its extinction in the 

 county. Although large and clumsy, it climbs readily, and 

 often lives in the same tree for days. It also swims quite 

 readily, sometimes entering the water voluntarily. It makes 

 a number of noises ; it sniffs, grunts, whines, chatters, and 

 sometimes shrieks and cries like a child. 



Marmota monax refuscens. Woodchuck. — Before the set- 

 tlement of the county woodchucks were not very common, a 

 few living on the prairies as well as in the woods. With the 

 clearing of the forests it found a congenial habitat about the 

 fields and gardens of the settlers, and there found also choice 



