WAS MAN A CONTEMPORARY OF THE MAMMOTH ? 
279 
1841, 1843, 1845, and 1853. They relate to his discoveries in 
this country — the first two of them to his Missourium , and the 
others to his Hydrarchos , or, as these publications call it, his 
Hydrargos , or species of Hydrachen. The following are copies 
of their title-pages, commencing with the earliest : 
44 Description of the Missourium, or Missouri Leviathan, to- 
gether with its supposed habits ; Indian traditions con- 
cerning the location from whence it was exhumed ; also, 
comparisons of the Whale, Crocodile, and Missourium 
with the Leviathan, as described in the 41st Chapter of 
the Book of Job ; by Albert Koch. 16 pp. 8vo. St. Louis, 
1841. [1840 on the cover, indicating that the copy is 
from a second edition.] 
44 Description of the Missourium Theristocaulodon (Koch), or 
Missouri Leviathan (Leviathan Missouri ensis), together 
with its supposed habits and Indian traditions ; also, com- 
parisons of the Whale, Crocodile and Missourium with the 
Leviathan, as described in the 41st Chapter of the Book of 
Job; by Albert Koch. Fifth edition, enlarged. ’2i> pp. 
8 vo. Dublin, 1843. [A “third edition” of 24 pages ap- 
peared in London in 1841.] 
“Hydragos, or Grreat Sea Serpent of Alabama, 114 feet in 
length, 7,500 lbs. weight, now exhibiting at the Apollo 
Saloon, 410 Broadway. Admittance 25 cents.— Description 
of the Hydrargos Sillimanii (Koch). A gigantic fossil 
Reptile, or Sea Serpent : lately discovered by the author in 
the State of Alabama, March, 1845. Together with some 
geological observations made on different formations of the 
rocks during a geological tour through the Eastern, Western 
and Southern parts of the United States, in the years 1844- 
1845 ; by Doctor Albert C. Koch, Corresponding Member 
of the Societies of Halle, and of Dresden, &c. 16 pp. 8vo. 
New York, 1845. [Following this, Dr. Koch published at 
Berlin, in 1845, a book of 99 pages, with eight plates, 
entitled 4 Die Riesenthiere d. Urwelt,’ giving an account 
of his Mastodontoid discoveries in America.] 
44 Description of the family of Animals now extinct, but 
known to the scientific world under the appellation of Hy- 
drachen : * these animals, when living, were the most gi- 
gantic, powerful and horrible beasts of prey that ever ruled 
over and spread terror through the primitive Oceans ; also 
* In this change of name from Hydarclios, the Water-Chief (the sug- 
gestion, no doubt, of some friend, since he never wrote it right), to Hydra- 
chen, a word that looks as if made up from the Greek word for water and 
the German for dragon, Dr. Koch evidently intended to adopt Muller’s 
German term for the family, Hydrarchen. 
