70 Trans. Acad. Sci. of St. Louis. 
river is also very crudely shown. The presence of the Ozark 
mountains seems to be suggested, but the range is continued 
eastward on the original map and south of the Illinois lake it 
is termed the ** Apalachin M.”’ 
In 1733 an edition of a map by Henry Popple was issued, 
entitled «* A Map of the British Empire in America, with the 
French and Spanish settlements adjacent thereto.’’ * It is in 
atlas form, the maps being in large colored sheets on a scale 
of about 50 miles to the inch. The Mississippi and Missouri 
rivers and their tributaries are shown, but very inaccurately. 
D Anville’s map of 1752, entitled «« Carte de la Louis- 
iane,’’ has only the lower Mississippi valley represented.T 
Dumont’s map of 1753, also named ** Carte de la Louis- - 
iane,’” was published in Dumont de Montigny’s ‘ Memoires 
historiques de la Louisiane.’’ It represents the Mississippi 
valley and adjacent country ; lines of latitude and longitude are 
fixed on the map and, according to these, the longitude of the 
site of St. Louis is 284° E. (presumably of Ferro), which is 
about 94° W. of Greenwich.t{ 
The Du Pratz map of 1763 appears in the « History of 
Louisiana, by M. Le Page Du Pratz.’’ The Mississippi river 
is placed about 150 miles west of the true position and the 
mouth of the Missouri about 70 miles too far north. On p- 
295 of Vol. I, the author remarks that the French had pene- 
trated only about ‘*300 leagues’’ up the Missouri at that 
time. 
In the year 1770, there was published in London, a work 
entitled ‘* The Present State of the European Settlements on 
the Mississippi, with a Geographical Description of that River; 
illustrated by 8 plans and draughts: 4 to. By Capt. Philip 
Pittman.” Of these draughts one entitled «* Draughts of the 
Mississippi river from Balise to Fort Chartres,’’ in three sheets, 
1s of special interest here. His maps were the outcome of 
be years of surveys, and, from the published references, 
of Se etna eine cant me ve ooo F. Palfrey, Secretary 
. ta Copy of this map is in the library of the Mo. Hist. Soc., St. Louis. 
Society. of this map is also contained in the library of the Mo. Hist. 
