46 



mound and earthwork at present existing in this region. The con- 

 struction of such a map is contemphitcd when the necessary materials 

 for it have been collected. Finally, it is not out of place to mention 

 here the existence of another class of ancient remains, namely, those 

 of the mastodon, which are quite frequently found. Within a few 

 years not less than three deposits of this character have been discov- 

 ed in the peat bogs bordering the river. These were casually discov- 

 ed in the work of ditching and doubtless the remains of many more 

 are scattered through the valley. 



