712 Notes on Stone Implements found in New Fersey. (October, 
we have continued to call them Triassic, If the view here pre- 
sented of their former extent is sustained, it is evident that the 
separate members are of one age, differing in their lithology and 
fossils according to the various conditions under which they were 
deposited. 
Nore,—Although the conclusions given in my former paper 
were arrived at independently, I find that the same explanation of 
the dip of the rocks has presented itself to others. Prof. Hitch- 
cock in his work on the “ Ichnology of Massachusetts,” p. 14, in 
speaking of the opposite dip of the beds in New Jersey and the 
Connecticut valley, says, “ It looks rather as if an anticlinal axis or 
elevation between them, had been concerned in the tilting of both.” 
Prof. Kerr, in his report on the geology of North Carolina, page 141, 
accounts for the separation of the Deep and Dan river Triassic areas 
by the upheaval of the region lying between, and the removal of 
the Triassic beds by denudation, the parts remaining are the 
fringing portions of a great anticlinal. Prof. Bradley, in an article 
“On the Geological Chart of the United States east of the Rocky 
mountains” (Amer. Four. Sci., Vol. xu, p. 289), favors Prof. Kerr’s 
conclusion and suggests that the numerous trap dikes intersecting 
the metamorphic rocks of North Carolina, South Carolina, Geor- 
gia and Alabama, may belong to the Triassic series and indicate 
the former extension of this formation southward; the dip of the 
beds in New Jersey and the Connecticut valley also attracted his 
attention and suggested the former connection of these two 
areas. 
d 
O ama 
NOTES ON STONE IMPLEMENTS FOUND IN NEW 
e JBERSEY. 
BY CHAS. C. ABBOTT, M.D. 
Te recent article by Prof. Perkins in the January NATURALIST 
suggests the propriety of my making a brief reference to cer- 
tain forms of stone implements which have been found in New 
Jersey since the date of the publication of the Smithsonian An- 
nual Report for 1875 ;? and particularly to the occurrence of such 
1 
1 Archæology of the Champlain valley. By Prof, Geo. H. Perkins. 
2 January, 1877. It may be well to state that the MSS. of my paper was com 
pleted in Dec., 1873, and during the six years ensuing, I have gathered fully twelve 
thousand additional specimens. None of these are referred to in the Smithsonian 
Report for 1875. 
