316 Scientific Intelligence. 
remember Hunt, Macfarlane and others likened them to the Huro- 
nian, while Sir Kiera thought they more resembled some por- 
tions of the Devo 
The Seles of "New Hampshire. C. H. Hrrencocn, State 
Sant ba J. H. Huntineron, Warren Upnam, an G. W. 
Hawes, Assistants. Part II, Stratigraphical Geology. 684 pp. 
Royal 8v0, with many maps, plates, and sections. Concord, 1877. 
—This large volume consists mainly of chapters by Professor 
Hitchcock. The geology of the Coés and Essex TSO RTEB DION 
district and of the west part of the Merrimac mph and so 
other brief sections are by Mr. J. H. Huntingto 
e difficulties of the survey have been linea on account of the 
see: of the surface covered by unbroken forests, and the dis- 
turbed crystalline condition of the rocks. But, through great 
labor, the distribution of the several ads of metamorphic rocks 
has been to a large extent made out, and is carefully describedst in 
the Report. Professor Hitchcock has carried gue rd the wo 
with energy and fidelity, and has presented not only his saa 
views, but also,‘with fairness, as far as he has hh them, 
the views of others. As to the sone mcrae from the facts pre- 
sented in the volume, Professor Hitchcock is aware that the writer 
differs from him in many points; and if in the remarks beyond 
some of these differences are mentioned it will be without the 
assumption on the writer’s Lage that he is always right. 
Professor Hitchcock refers the crystalline rocks of New Hamp- 
shire—taking his latest conclusions from the closing pages of the 
volume—to the following groups in ascending order:—Lauren- 
ton: Montalban F anions to Huronian, and so named from the 
esides, there are various areas of eruptive granite recogni ized, 
including those of the “ Be ted granite,” “Albany granite, 
* Chocorua series ” aud o 
The La 
ite, feldspathic mica schists, the a ated gneisses, fibrolite 
schists; the Upper Hu wronian, hams blade wink a chlorite schist, 
greenstones, and other rocks; the Cods, staurolite slate, staurolitic 
mica schist, Rentenyie § overlying er ORs Calciferous mica 
n 
even one stratum may, after metamorphism, be, in its different 
parts, andalusite slate, mica hist, pas ar mica schist, gneiss, 
3 
