

Y PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
has been raised. The Radiata are, it is true, radiated sacs, the Articulata 
ringed sacs, and the Vertebrata sacs divided by the vertebral axis, but 
the Saccata are typically sacs. 
Prof. THEo. GILL, in his communication “On New Species of Fishes 
obtained by Prof. Orton in the Valleys of the Maranon and Napo,” con- 
cluded from the study of twe nty-five species collected by Prof. Orton, 
that there were no distinct fish faune in these river valleys, species of the 
same genera having been found distributed through them, some of the 
genera having also occurred lower down Mie Amazon, while one genus in- 
habited the When waters of Central Amer 
Dr. T. SrERRY Hunt, in his remarks ad the Geology of North-east- 
ern Und ^ exhibited a new geological map of the British Provinces, 
and of the United States as far South as Virginia, and West to near the 
base of the Rocky Mountains. He called attention to the uncolored por- 
tion represented by New England, and to the fact that less was known of 
the age of the rocks of that region than any other. He stated that he 
knew of no eruptive granitic rocks, but that with an occasional exception 
dolomites from limestones, etc. He cited a case observed in New 
Brunswick where the Dadox dylos sibs are overlaid by granitoid and 
felspathic grits, and yet the Dadoxylon sandstones are unaltered n 
lithological grounds he thought that the rocks a ll and New- 
age, 
_ and having seen specimens of Labradorite, from boulders in Mic 
in the Museum of the Peabody Academy, he suggested that there might 
be Laurentian rocks about Salem 
Messrs. MarrHEW and Muy: in their * Remarks on the Age and 
ree x the Metamorphic Rocks of New Brunswick and Maine,” 
g a summary of the labors of ver pines Matthew, Daw- 
New 
wick, a ridge of variable width, having Devonian slates on both sides. 
The two together probably occupy diire quirter of the metamorphic 
country south of the New Brunswick coal-fields. 
_ Two principal wes eae of this series may ee; be distinguished, on 
the south side of the granite ridge, viz.: (1) the Lepreau, comprising 
.. diorites, felsites, and conglomerates in its ee portions ; pe in the 
upper subdivision gray sandstones, black slates, and the Dadoxylon sand- 
stones. To the lower division, vi : (2) the Mispeck division, belong, in 
. the lower subdivision, conglomerates and diorites, Cordaite, fine-grained 
.. Slates and orthophyre; and in the upper subdivision conglomerate and 
Slate, Pao grit, talcoid (?) slates and limestone. At the base of 



