74 Trans. Acad. Sci. of St. Louis. 
The mouths of both the Missouri and Ohio rivers are too far 
south, the former over 30 miles, the latter over 15. The 
drainage of the southwestern portion of the State is particu- 
larly inaccurate, the headwaters of the St. Francois river 
reaching nearly to the site of Kansas City, and the Arkansas 
river flowing across the southwestern corner of the State. 
Arrowsmith’ s map was published in 1796 and with additions 
about 1802. It is entitled «« A Map of the United States of 
North America, by A. Arrowsmith.’? The scale is about 25 
miles to the inch. It includes the area of Missouri, but no 
especially noteworthy features are observed on it.* The 
course of the Mississippi river corresponds closely with that 
of the Ross map. 
In the years 1795 and 1796, according to a claim recorded 
in the American State Papers,f James Mackay made a voy- 
age of discovery ‘*to the upper and unknown parts of 
Missouri,’’ under commission from the Governor of the 
Provinces, Baron de Carondelet. He is credited with having 
made a map, as the result of his voyage, which, it is stated, 
is ** such as never appeared before of this unknown part of 
the world.’’ It was delivered to Don Manuel Gayoso de 
Lemos, Governor General of the Provinces. No copy of this 
map was accessible to the writer, and it is doubtful whether 
one is now extant. Exactly what is meant by the term 
** Missouri,’’ is not stated. If it relates to the Missouri river 
this map can probably be put down as the first constructed 
from actual exploration of that stream. 
In works published shortly after this date, maps of this 
part of the country are frequent. Among these may be 
noticed the following: — 
Gilbert Imley’s map of 1797, published in his «+ Topo- 
graphical Description of the Western Territories.’ The site 
of St. Louis is placed on this map at about lat. 303° N. and 
long. 92° W. of London. 
L. Colin’s map of 1798, accompanies the * Voyage a la 
Louisiane,’ ete., in 1794 to 1798, by Baudry des Lozieres. 
* A copy of this map is also the Pp 
| roperty of Capt. Carl F. Palfrey. 
+ Public Lands, Vol. VE. mw: HS : . a 
