98 Trans. Acad. Sci. of St. Louis. 
The costand the quality of this mapping depend very greatly 
upon the character and talent of the men executing it. The 
work demands a sound constitution, industry and perseverance, 
attention to details and, above all, an eye for topography. 
The sluggard has no liking for the work, the slurrer should 
have no place in it. This work of the Survey so far, is dis- 
tributed over prairie and timber country, in flat and in hilly 
portions of the State. The results have been reached at the 
extremely low cost of not more than $2.00 per square 
mile. This includes the cost not merely of the topographic 
work, but also of incidental geological work, as well as the 
reduction of notes and the plotting of maps and sections. 
The cost of engraving and printing is, of course, not included, 
nor is the cost of triangulation, of astronomical work, or of 
administration. The figure given covers merely the salaries 
and expenses of the parties doing the work in field and office. 
It is believed that the work can be extended into any portion of 
the State at an average cost of little more than this amount and 
an allowance of $3.00 per square mile is certainly most ample. 
As a necessary preliminary to the detailed mapping in the 
State the latitudes and longitudes of a number of points have 
been determined. These were made in part by the U. S. 
Geological Survey and in part by the U. S. Coast and Geo- 
detic Survey, both being assisted by Prof. H. S. Pritchett 
of the Washington University Observatory. The points thus 
far ites aad: as indicated on the map are: — 
Sg abe! GREEN County (U. S. G. S.) Lat. Long. 
r, in Drury College grounds 87° 13’ 15.96" 93° 17’ 17.58 
Bor rvat, ~— County (U. aes 
n§. Pale Bn aptist College grounds —_—-37° 36" 35.22” 93° 24’ 47.68 
Sr. toute: (Pri a 
Pier, Spearercry eekngoe Soe 38° 38’ 3.6” 90° 12’ 30 
a 
wie a a County (U. 8. C. & G. 
Pier, ead east of depot 37° 36’ 30.76” 90° 37’ 36.68 
Potosi, WasHINGTON County (U.S. C. & G. 
S. & Mo. j 
Pier, Court House yar 37° 56’ 14.62" 90° 47’ 16.16" 
Macon Ciry, Macon Co an (U. 8. C. & G. 
S. & Mo. G. 8.) a 9 
Cor Pier, Court House y 39° 44" 32.9” 92° 28" 14. 
OLUMBIA, BooNE County (Pritchett r 
Observatory 8 State one (Pa : 38° 56’ 51.6” 92° 19’ 34.05" 
County (Pritchett) 
w, Ho OWA ” 
- Opasteatary College 39° 18’ 45.6’ 92° 49’ 29.55 
