86 Trans. Acad. Sci. of St. Louis. 
The following determinations were further made, up the 
Missouri river: — 
Franklin, Howard Co. 
Lat. (mean of three determinations), 38° 57 09” N. 
Long. (mean of three determinations), 92° 57’ 05” W. 
Fort Osage. 
Lat. (mean of three determinations), 39° 09’ 333" N. 
The State line is introduced in the original map in the 
position shown on the accompanying sketch; also the old 
Osage boundary line. The true drainage of the Ozark region 
is faintly suggested, though the peculiar system of tributaries 
of Black river is wholly imaginary. 
Finley’s map of North America was published in 1826, 
under the title of ** Map of North America, including all the 
recent geographical discoveries.’ A reduced copy is included 
opposite p. 30 of Vol. XI., of the Pacific railway reports. 
The portion embracing Missvuri shows nothing in advance of 
the earlier Long map, and is probably largely copied from 
that map. The Ozark mountains are outlined in a general 
way, but the drainage system of that area is very inaccurate. 
In 1825 a survey of a road from Fort Osage to Taos in New 
Mexico was begun by order of the U. S. Government, by J. 
C. Brown. Fort Osage was the startling point, which was 
taken at 93° 51’ 03”.* 
In 1837 there appeared a map on a scale of 50 miles to the 
inch, compiled by the United States Topographical Bureau, 
entitled <‘ A map illustrating the plan of the defenses of the 
western and northwestern frontier.’’ It was compiled under 
the direction of Col. J. J. Abert, and is published in Senate 
Document No. 65 second session, 25th Congress. The repre- 
sentation of Missouri is much in advance of that of any pre- 
viously published. The Mississippi river is placed about 10 
miles west of its true position, but the Jatitudes of points along 
it, in, and adjacent to the State, are fairly correct. The 
drainage displayed of the interior bears, in a general way, a 
close resemblance to that of our modern maps; especially of 
the Ozark region is the representation of the drainage an ad- 
* See Pacific R. R. Reports, Vol. XI, p. 25. 
