548 General Notes. | [June, 
7 . Quaternary —According to Prof. J. N. Woldrich, seven or eight 
A forms of domestic. dogs have existed in Europe from alluvial 
times until now, while four species of diluvial dogs are known. 
Existing European dogs are therefore not descended from any 
species of Canidæ now living in Europe, though they may have 
been crossed with the wolf, fox, or jackal. The so-called feral 
dogs of Syria may be the remnant of a diluvial true wild dog, 
the greyhound is said to be certainly descended from a diluvial 
ancestor of the African Canis simensis, and long-eared small dogs 
may be descended from a diluvial ancestor of the fennec—— 
Sir R. Owen has described the premaxillary and scalpriform 
teeth of a large extinct wombat (Phascolomys curvirostris Ow. 
from the Wellington bone caves. The animal must have been 
somewhat smaller than the type of the sub-genus Phascolomys. 
. 
MINERALOGY AND PETROGRAPHY.' 
and to the explanation of the origin of the crystalline ware 
The subject of metamorphism in the Huronian rocks 1s referre 
_ } Edited by W. S. BAYLEY, Johns Hopkins University, Baltimore, Md. — 
n Fifth annual report of the Director of the U. S. Geol. Survey. Washington" 
Government Printing Office, 1885. : 
