310 Life and Character of C. E. WrigJit — Lawton. 
His plan embraced a careful examination of the entire min- 
eral region of the northern peninsula, section by section, 
tracing the rock formations, noting all outcrops and their 
geological features, the magnetism, topography, collecting and 
marking specimens, &c. All these details were carefully map- 
ped. The specimens were catalogued and referred by co-ordi- 
nates to the corner of the section from which they were obtained, 
and were determined under the microscope by making sections of 
them, and the mineral characteristics were fully set down in the 
catalogue. 
Every specimen of the many thousands which he had is thus 
described and referred to the map of the township in which it 
was found. By opening the volume of plats and turning to the 
particular one required, we find indicated on it the point where 
the specimen was obtained, and also find a sketch of the for- 
mation, and of the topography, and elsewhere have a statement of 
the physical features of the formation. In this manner he had 
examined the iron region from range 25 westward to range 
34, and during another season it was expected to cover the 
country to the Grogebic iron range, and possibly to include 
that also and reach the Montreal river, the western boundary of 
the state. In addition to this work done in the lake Superior 
district, Mr. Wright began in 1885 to collect the records of the 
deep borings that have been made in the state for salt and for 
gas; he had arranged with parties who were engaged in sinking 
wells to save for him samples of the several strata passed through, 
taken at each few feet in descent. Of some of these, where he 
had collected the data, he was able to construct geological dia- 
grams showing the different strata passed through. One prac- 
tical value of these sections is, that they enable parties to com- 
pare the results of their own drilling, from day to day, with the 
sections of borings made, perhaps, in their vicinity, and thus to 
form an intelligent idea as to where they are geologically, and 
when they may expect to reach the horizon where gas or salt 
was found in other wells. Scientifically these borings, thus 
made in various parts of the lower peninsula, afford the finest 
possible data for geological cross sections; giving us an idea 
of the structure of the rocks^underlying the southern peninsula 
of Michigan. 
Intensity of application to his work through many years had 
