398 Scientific Intelligence. 
II. GroLtocy ANp Natura History. 
1. Supplement to the Article on Dr. Koch’s evidence with re- 
gard to the cotemporaneity of Man and the Mastodon ; by the 
Author.—Since the article on pages 335 to 346 was printed, I 
have come across another of Dr. Koch’s pamphlets. It is a “ sec- 
ond edition” of the New York pamphlet of 1845. In the main it 
is the same with the nish one of that year. The most important 
Paath ag is in the first half of the title page, which reads as 
follo 
# ‘Description of the Hyprarcuos Hartani (Koch). (The name 
ILLIMANII is changed to Harwant, by the particular desire of 
Professor Silliman. a A gigantic Fossm Reptiie, fat discovered 
by the author, in the State of Alabama, March, 1 
A second difference is in the appended widtese of nearly 10 
pages, which extends the pamphlet to 24 pages. This matter 
consists of (1) an extravagant article from “The New York Dis- 
sector ;” (2) the article from the “ New York Evangelist ” about 
the ydrarchos and Leviathan, alluded to on page 344, as occupy- 
ing the inside pages of the e pamphlet of 1853; and (3 ya puff from 
the “ New York Morning News. 
A third novelty is a large wood-cut of the “ Hydrarchos Har- 
lant,” covering the last page of the cover. The body of the pam- 
phlet ip pan only some verbal change 
The w York pamphlets of 1845 stati one significa ant dis- 
covery of Dr. Koch’s, made during his “ geological tour,” which 
is worth citing. He says: When at Golconda, Illinois, “ i discov- 
wonderful forms, the Moi eeinte of m many 0 f them "bearing 
nee 
inhabitants of the country pits d screws.” 
The Doctor’s “ gh columns” of “ * fossil fish” are the common 
elsewhere, only in Subcarboniferous rocks. 
of the Glacial and other Psa cat epochs.—The idea 
that a high-latitude elevation making a partial barrier across 
the shaliower part of the Atlantic Ocean from Scandinavia to 
Greenland, would Pua a change of temperature in the North 
Atlantic, aed Acad tn ee by Mr. Prestwitch in his Presidential 
dd ore 
ings, xX, "535-644, J; D. D. 
3. Gisabogie al Survey of Wisconsin.—The present geological 
survey of Wisconsin was organized in the spring of 1873, with 
Dr, I. A. Lapuam as chief geologist, and Professor R. D. Irvine, 
