76 Trans. Acad. Sci. of St. Louis. 
habited by the Western Tribes of Indians. London. Printed 
for Longman, Hurst, Rees and Orme, Paternoster Row — 
1809.” A reproduction of the map accompanying this 
edition is inserted on p. 75. In the report the Missouri river is 
said to be about five leagues above St. Louis, at latitude 
about 40° N. The position thus assigned the river does not 
agree with that shown on the map, as a casual inspection will 
show, nor is it in accordance with the position of cited in 
later editions. The map is, however, a very crude produc- 
tion. The mouth of what is termed the ‘* Causas river ”’ is 
placed at about 98° 30’ W., whereas it should be 94° 30 
W., and it is further located about 450 miles west of St. 
Louis, whereas it is actually only about 240 miles west. This 
and other features of the map lead one to believe that it was 
hastily prepared and does not really incorporate the results of 
the expedition. a 
In an edition entitled ‘* History of the Expedition under the 
command of Captains Lewis and Clarke to the Sources of the 
Missouri,’’ etc., prepared for the press by Paul Allen, Esq-; 
Philadelphia, 1814,’ the location of the mouth of the Wood 
river, opposite the mouth of the Missouri river, is given, on p- 
3, as 38° 55’ 1955,” N. lat. and 89° 57’ 45” west of Greenwich, 
which is about ten miles east of its true position and about five 
miles north. 
The third edition is entitled: «« Travels to the Source of the 
Missouri river and Across the American Continent to the Pacific 
Ocean, performed by Order of the Government of the United 
States in the years 1804, 1805 and 1806. By Captains Lewis 
and Clarke, published from the official report and illustrated 
by a map of the route and other maps. London. Printed 
for Longman, Hurst, Rees, Orme and Brown, Paternoster 
Row, 1814.”’ 
The latitude and longitude of the Missouri river, as given in 
this edition, agrees with that of the Allen edition. The map 
accompanying this volume is a great improvement over that 
of the earlier report. The course of the Missouri river is 
quite accurately shown and, according to the report, was laid 
down from courses and distances taken in the up passage, cor- 
rected by frequent observations of latitude and longitude. 
