488 Scientific Intelligence. 
than 100 feet high ;” in “no instance cross any hill where, coming 
from the north, one eae have to rise more than about 200 feet 
_ in crossing it; in fact the courses of the kames are curiously 
arbitrary.” His mn - their origin is essentially that of Mr. 
Upham, cited on page 
4. Geology of | Teland. -~Mr. N. L. Brirron bas an arti- 
cle, in the School of Mines Quarterly (New York) for May last 
on the geology of Staten ges epee large island lying to the 
south-southwest of New York Island. e geological map accom- 
anying it represents the Deine area as running nearly 
through the island, from New Brighton and Stapleton on the 
north (or rather from Constable Point just north of the island) ; 
gneiss as lying against this area on the east; Triassic sandstone 
and trap on the west; Cretaceous beds on the eastern and south- 
the serianine or “steatitic rocks, occur superficial 
deposits of limonite, ih have resulted from the decomposition 
of the rocks, in plac It is stated that the amount hitherto 
mined may be as aa as 250,000 tons, while that now annually 
mined is about 20,000 tons. The limonite of the serpentine area of 
Rye, New York, (this Journal, I, xx, 32, 1880), is another ex- 
ample of the ore am le from the iron minerals of a serpentine 
egion ; but at Rye there is some ferriferous dolomite with the 
serpentine, while the Demat ease of Mecesinnted limestone or dolo- 
mite on Staten Island is not mentioned. 
5. Apuan Alps.—A paper op the geology of the Apuan Alps, 
by B. Lorr® and D, Zaccaena, is contained in the R. Comitato 
Geologico d’ Italia, Bulletin Nos. 1 and 2, 1881. The rocks below 
ssc lias, are stated to include, beginning below— 
e central schists: mica schist, tale schist, gneissic and 
aryillaceous ee _o lenticular masses of calciferous schist 
containing Orthoe 
b. The zone of the Grezzoni: the rock so called being a rough- 
looking impure limestone sparing] ie arse suberystalline or 
ceroid and breecciform ; aftorded De Ste a fossil undoubte dly 
Triassic, Turbo solitarius; about five alia ag meters on an aver- 
age in thickness 
¢. The zone of the marbles: savcharoidal limestone and dolomite, 
about 1,000 meters ; some traces of Crinoids and Chemnitzia. 
7. The zone of the superior schists: consisting of an alternation 
of schists, Cipolin marbles, calciferous, micaceous and arenaceous 
schists, with beds affording Pentacrinus and small ammonites of 
the ay Phylloceras and dgoceras ; 200 to 1,000 meters in 
thickne 
The ae gives detailed descriptions with sections. 
