468 Scientific Intelligence. 
the paleontologists, were m ame, With regard to the 
rst, when a geologist finds one rock overlying another, he is 
obliged to accept that as the natural arrangement. en as 
the fossils, with all our increased knowledge, I y 
good paleontologist of the present day would feel himself justified 
in st physical appearances, on t 
specimens figured in 1847, on pl. 67, Pa . Vol. i, Be this as 
A 
with me in the scnilossion of the mistake, whereas neither Prof. 
Hall nor Dr. Hunt contributed any aid whatever, but, on the con- 
trary, opposed the change that has been made to the utmost 
[These remarks are followed by a history of the observations on 
the Vermont trilobites, and on the determination of the age of the 
Black Slate and Red Sandrock of Vermont, substantiating Mr. 
You see by the enclosed* that we differ about the Taconic. 
And yet we do not differ materially. For, viewing the Taconi¢ 
as you do—the system developed by Professor Emmons through 
* A copy of a brief article from the May number of ‘the American bier it 
pe . 3 7n his 
ni 
ion are give ne, ‘ch- 
section on the same plate representing a section from Lake Champlain pee 
mond, Vt., through Charlotte. No description of the rocks of this section 
found in the of the volume. ‘i ic slate” 
In figure 4 of plate x1 representing a section through Graylock, the hare west 
stops just west of Berlin, Rensselaer county, New York, the slates on 
