482 ADDRESS OF T. STERRY HUNT. 
and to identify both with the crystalline schists of a similar age in 
Norway. Later observations in Michigan justify still farther this 
comparison, for not only the more schistose beds of the Green Moun- 
tain series, but even the mica-schists of the third or White Mountain 
series, with staurolite and garnet, are represented in Michigan, as 
appears by the recent collections of Major Brooks, of the Geolog- 
‘ical Survey of Michigan, kindly placed in my hands for examina- 
tion. He informs me that these latter schists are the highest of 
the crystalline strata in the northern peninsula. 
To the north of Lake Superior, as I have already shown else- 
where, the schists of this third series, which, as early as 1861, I 
compared to those of the Appalachians, are widely spread ; while 
in Hastings County, forty miles north of Lake Ontario, rocks hav- 
ing the mineralogical and lithological characters both of the 
second and third series are found resting on the first or Lauren- 
tian, the three apparently unconfermable, and all in turn overlaid 
by horizontal Trenton limestone.* ; 
We have shown, that in Pennsylvania, while some of these schists 
of the second and third series were regarded as altered primal 
rocks by H. D. Rogers, others, lithologically similar, were referred 
by him to the older so-called. azoic series, which we believe to be 
their true position. Professor W. B. Rogers has lately informed 
me that in Virginia the gneissic series having the characters of 
the Green Mountain rocks, is clearly overlaid unconformably by the 
lowest primal paleozoic strata of the region. Coming northward, 
the uncrystalline argillites and sandstones holding Paradoxides at 
Braintree, Massachusetts, + and St. John, New Brunswick, overlie 
unconformably crystalline schists of the second series, and in t 
latter region, in one locality, rocks which are by Bailey and Mat- 
thew regarded of Laurentian age. In Newfoundland, in like 
manner, a great series of crystalline schists, in which Mr. Murray 
recognizes the Huronian system as first studied and described by 
him in the west, is unconformably overlaid by a group of sand- 
stones, limestones, and slates holding Paradoxides. The peculiar 
gneisses and mica-schists of the White Mountain series appear to 
be developed to a great extent in Newfoundland, which has led 
me to propose for them the name of the Terranovan system. } 
GM BB eco tags more 
* Amer. Jour. Sci., TI, xxxi, 395, and 1; 85. 
t Hunt, Proc. Bost. Nat. Hist. Soc., Oct., 19, 1870. 
t Amer. Jour. Sci., II, 1, 87, 
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