ANNUAL REPORT FOR 1873. 



17 



titles, for no part of Wisconsin lies below that level. After the pub- 

 lication of the following list, it will not be difficult to connect any 

 future survey with this, now well established datum plane, and thus 

 aid directly in the development of the physical geography and topo- 

 graphy of the state. 



ELEVATION OF RAILROAD STATIONS. 



