J. D, Dana—Koch’s Evidence on the Cotemporaneity, etc. 885 
Art. XXXV.—On Dr. Koch's Evidence with regard to the Co- 
pate <i Man and the Mastodon in Missouri; by 
James D. Dana 
for (1) it has been riatien with great care by the t of 
geological observers; (2) it has aged ate through si re- 
examinations of reported cases by other able geologists; and 
(3) it has Beek further verified by the Toctll investigations of 
committees of scientific societies. 
The North American facts thus far announced have not, un- 
fortunately, the same broad basis for confidence. 
Aimong the earlier of the reported discoveries are the two 
in Missouri, brought out by Dr. Koch. The account of Cae has 
often been cited by writers on the subject; and Mr. J. W. Foster, 
in his * Pre-Historic Races of the United States of Avene 
prefixes to the citation the remark that Dr. Koch, at an inter- 
view with him, during the last year of his life, assured him, ‘in 
the most solemn and emphatic manner, that ‘his statement was 
true.” Mr. Foster also observes that “to deny the accuracy of 
his statement is to accuse him of having attempted to perpe- 
trate a scientific fraud,"—a decision not sustained by the ordi- 
such cases, rightly asks for corroborating testimony. More- 
over, Dr. Koch’s statement of his facts may be true, and still 
his conclusion as to their proving the bes sity of Man 
and the Mastodon in North America be wrong 
sider — as carefully and guarded y as has been done for similar 
rv. 
the conclusion that has been drawn from t 
I have before me four pamphlets by Dr. Koch, dated, 
severally, 1841, 1848, 1845 and 1853. They relate to his dis- 
coveries in this country — the first two of them to his Mis- 
_ sourtum, and the others to his Hydrarchos, or, as these publica- 
tions call it,—his Hydrargos, or species of "Hydrachen. The 
Sloe are copies of their title pages, commencing with the 
earlie 
rishi of the Missourtum, or Missourr LeviaTuan, alee al 
with its supposed habits ; Indian craditian concerning th 
