> of the same age to th pest and ^. e nir- The result ] 
Nore. — 
E in 18 13, some oot A d of compa 
organic forms in the older > strata of ‘New York, and those 
l species which, 
ize, and somewhat in — 
ici in fact identical ; and that 
in nearly all cases, the west erand ipi ie individuals 
have acquired a much greater development than those in New — 
York, Thus the same species is known by different names in - 
New York and Ohio, and even in Ohio and Kentucky the old _ 
and young of the Same species are known by different names. | 
Within the past few. months I have also had an opportunit y E 
of , Wenn a collection of fossils from Eastern Canada w 
those of New York and the. west. This lection : 
ingly submitted to my cdi gan, 
cial Geolo 
n either in the Sifurian System of Mr. Murchison or by’ Captai ^ 
“Portlock, im his report on the county of Londonderry, and- 
“parts of Tyrone and Formae Several forms figured by | 
the latter, ate identical with species und in the Hudsol River | 
G : ; 
essential importance in prihatos to light the » Bceting tii 
and in.developing this most interesting 1 important subje 
were! Distribution of nem emains in. a k 
