38 REPORT OP THE 



essary to identify each species of animals at every point within 

 the limits of its general distribution ; while, for the determina- 

 tion of the limits of the formations, this very minuteness is indis- 

 pensable. Moreover, the roving habits of animals bring a large 

 proportion of them under the notice of an observer who does 

 not go out of his own township, while rocks must be visited in 

 their places. It may not be amiss to state with reference to the 

 nature of zoological field work, that a single industrious collec- 

 tor, employed at small compensation, would be able in one sea- 

 son to accumulate large stores of specimens from the remoter 

 portions of our State. The same remark is true of botany. 

 The elaboration of the materials thus collected must, of course, 

 be confided to the ablest hands. 



It will remain for the legislature to decide upon what scale 

 the prosecution of the survey shall be continued. I cherish the 

 hope, however, that provision may be made for the creditable 

 completion of the field work, within the space of two or three 

 years. So far as the geological work is concerned, I deem it 

 desirable to have parties engaged, during the next season, upon 

 the exploration of the following districts: 



1st. A party upon the south shore of Lake Superior; 

 2d. A party upon the shores of Lake Michigan, as far as un- 

 explored; 



3d. A party^in the northern portion of the Lower Peninsula. 

 The personnel required for such a prosecution of the work, 

 besides the geologist in charge of the survey, would be as 

 follows : 



One Chemist and Mineralogist; 

 One Draughtsman; 



Two Assistants, capable of leading parties ■ 

 Three Sub- Assistants; 

 Six Laborers and Boatmen. 



Zoological and Botanical Collectors could be attached to the 

 parties thus organized, with little additional expense. 



I desire to close this chapter of my report with an appeal to , 

 all of our citizens to co-operate with the State Geologist in ev- 



