NEW HAMPSHIRE. 385 



In the First Annual Report of the New Hampshire Geological Sur- 

 vey, 18G9, Prof. C. H, Hitchcock divided the rocks then examined as 

 follows : — 



" Gneissic, Granitic or White Mountam Series. 



Stiurolite Schists 1 



Lower (mostly green) Schists 



Copper Belt >■ Quebec Group. 



Clay Slate 



Auriferous Conglomerate 



Upper Schists." 



Prof. Hitchcock in that Report states that 

 "there are two general divisions . . . ., first the granitic and gneissic rocks 

 which appear to be older and consequently to underlie the formations of the 

 second or Quebec group — the true auriferous strata. The name Quebec is 

 that apphed by Sir W. E. Logan, of Canada, to rocks .... shown to consti- 

 tute a new group, not present in the New York series, but lying between the 

 Calciferous Sandrock and the Chazy Limestone." (1. c, p. 17.) 



. No evidence is given to show that the rocks belong to the Quebec 

 group, and that the granite is not eruptive, nor are its relations to the 

 supposed Quebec group stated. All is based upon theoretical grounds. 



In the Second Annual Report, 1870, the rocks of New Hampshire are 

 arranged as follows : — 



"1. White Mountain or Gneissic series, subdivided into 



1. Normal Gneiss. 



2. Ferruginous Gneiss. 



3. Granitic Gneiss. 



4. Feldspathic Mica Schist. 



5. Andalusite Gneiss. 



6. Chiastolite Slates. 



7. Granite. 



8. Syenite. 



9. Porphyritic Granite. 



10. Quartzites. 



11. Limestones. 



12. Soapstones. 



'« Little doubt remains as to the Eozoic or pre-Silurian age of this entire 

 series." 



" 2. Sienite of Exeter and Dover. 



" There appear to be sienitic rocks of probable Laurentian age, equivalent 

 to the Quincy sienitic group of Massachusetts, .... in the towns of Exeter 

 and Dover. They form, apparently, an anticlinal mass, overlaid by the Mer- 

 rimack slates." 



VOL. VII. NO. 11. 25 



