66 Trans. Acad. Sci. of St. Louis. 
It was prepared by a young French engineer, Jean-Baptiste 
Louis-Franquelin, who was in Quebec in 1683, on La Salle’s 
arrival enroute for France. A copy of a sketch is introduced 
here from Winsor.* The name ‘‘Za Louisiane,’’ which was 
given the country by La Salle, on his reaching the mouth of 
the Mississippi, is applied here, as is also the name ‘ Mis- 
sissipi.’’ The peculiar deflection of the lower course of the 
river and the position assigned its mouth are features difficult 
to understand, especially in view of the fact that the earlier 
Joliet map is much more true to nature in this respect. It 
suggests a reason for the unfortunate mistake which La 
Salle made, some two years later, in trying to find the mouth 
of the river with his colonists from France. A mistake which 
proved fatal to him as well as to many of his companions.f 
Another map of Franquelin, referred to as his ‘‘ third map,”’ 
is dated 1683. It contains some additional features of drain- 
age which are shown in the accompanying sketch. 
so ‘ 
SY,” wp OS 
,” 2 - 
° Y 
oe i 
\ sy I , 
: re) 
C>, — s 
Misionit Ge bail N 
Pansats ~ Fang 
* * 
. a> Ps 
te : Re 
Fg het Kort Rivveed 
w@s = rene 
x Panes : Bette viv 
+ = a pe 
' 
Fic. 6. FRANQUELIN’S “THIRD MAP” — 1688. 
** Missourils,”’ it will be noticed, is introduced here, from 
which the name ‘* Missouri’’ is derived.t The interlacing 
* Nar. and Crit. Hist., Vol. IV, p. 228. 
‘+ The latitude of the mouth of the river was determined by LaSalle by an 
observation in 1682, but he had then no means of determining the longitude. 
+The Missouri river was called by Marquette “ Pekitanouis,’? which 
means Muddy Water. In Shea’s ‘Discovery of the Miss. Valley,” is a 
foot note to the effect that the name Pekitanoui prevailed until 1712, when it 
was called } i after the Missouris tribe of Indians. 
