396 Geographical Notices. 
Dr. Engelmann then gives the following data, based, as he 
says, on his own “rather loose observations” respecting the ve- 
locity of the Mississippi. As he remarks on “ the absence of 
all other information” on this point it seems proper for us to re- — 
fer to Marr’s Keport of Observations at Memphis in 1849, and 
to Dr. Ellet’s work, to the measurements of Riddell, Forshey, 
and Dickenson reported to the American Association, and to an 
article by Lyell in this Journal, [2], ili, pp. 36 and 118. 
Date of Observation. _—— of ac Seirent One mile 
above low water, per bour. in 
1845. Feb. 20, 5 feet, 3°00 miles, 20 minutes. 
ic “c 28, ‘ 8-50 6b 17 sc 
1844. Mar.:5, 15° “ 400-22" 15 3 
. Ape: 26, 20..." 500... 4 12 _ 
1839. May 27, 21 « 5:09 11° 4 
geor, ouly 10; 20 oy co Fae 102 “ 
1844, May 19, 27 “ as eng 104.“ 
Pe et: Ga, Ok O20. haa 
CONTENTS. 
sg The world on Mercator’s pro-| 16. Switzerland. 
jection. 17. Italy. 
2. Eastern Hemisphere. 18. Spain and Portugal. 
%. Western Hemisphere. 19. France. 
4. Europe. 20, Netherlands and Belgium. 
5. Germany. 21. British Isles. 
6. Southwestern Germany. 22, Denmark and South Sweden. 
. %. Western Germany. 23. Scandinavia. 
8. Northwestern Germany. 24. ia. 
9. Central Germany. 25. Turkey and Greece. 
10. Brandenburg, Schlesien, Posen.| 26. Asia. 
11. Pommerania and Prussia, 27, Asia Minor and Syria. 
12. Austria. 28. Western Asia, 
13, Galicia, Hungary, &ec. 29. Hindostan. 
14, Bohemia, Mahren, Austria. 30. Eastern Asia. 
15. Eastern Alps. 81, Australia. 
