gather with vertebrae of the same species, are to be found in the mu- 
seum at the University at the last named place, which museum also 
contains the mandibles of Ekphas armeniacus found at Almudovar 
del Rio near Cordoba. 
Geological News.— General.— Herr Schluter in two papers 
entitled " Ueber die regularen Echinodermata der Kreide Nord 
Americas," and " Ueber Inoceramus und Cephalopoden der Texan- 
ischen Kreide, (Niederrhein. Gesselschaft at Bonn, March, 1887), de- 
scribes Salenia mexicana, from Chihuahua, Mexico, and Ifwcerarfius 
subquadratus, Turrillitcs irrideiis, and T. varians from Austin, Texas. 
i'he validity of the three species last mem.ioned is exceedingly 
doubtful, as the descriptions give no data sufficient to differentiate 
them from species already described by Roemer and Shumard. He 
also asserts that the Austin Cretaceous is equivalent to that of Ems, 
Germany, a rather indefinite statement since within the corporate 
limits of Austin is found nearly the whole range of the comprehen- 
sive Texas Cretaceous under conditions which could hardly be 
duplicated.—^. T. Hill. 
MINERALOGY AND PETROGRAPHY.^ 
Petrographical News. — Messrs. Adams and Lawson ^ of the 
Canadian Geological Survey have been examining the rocks associat- 
ed with the apatite in the Canadian apatite mines, to determine 
whether or not there is present a rock similar to the scapo- 
lite-diorite occurring in the Norwegian apatite region. They find that 
in some instances the Canadian apatite veins occur in a rock, compos- 
ed essentially of orthoclase and biotite,with or without augite.i.e, either 
mica-syenite or augite-mica-syenite. None of the thin sections of the 
rocks associated with the apatite resemble in the least those of the Nor- 
wegian rock. At other regions in the Canadian Laurentian, however, 
associated with limestones and amphibolites, specimens were collect- 
ed which are found to bear a strong likeness to the scapolite-rock 
from Norway. A specimen from near Arnprior on the River Otta- 
wa, is described as a granular aggregate of augite, hornblende, scap- 
olite, epidote, enstatite, pyrrhotite and rutile. The hornblende ap- 
pears in some cases to be primary and in others to be secondary. 
The scapolite is in large colorless grains, many of which show poly- 
synthetic twinning lamellae, which may be due to the remains ot the 
1 Edited by Dr. W. S. Bayley, Colby University, WaterviUo, Me. 
