234 Scientific Intelligence. 
state of Pennsylvania, and then its bending around in Catta- 
raugus County, New York, for another southward extension. 
n wes 
had an arched front, the chord of which ping i 
42° 15’ was nearly 500 miles long, and the versed sine, about 
120 miles. It was the southern front of the portion of the great 
ice mass which covere ew England and New York, and the 
regions 0 the northeastward, from whose higher portions the 
movement of the ice was southeastward and southwestward. 
Professor pa, 8 report is fully. illustrated by maps and biped 
3. Geological Survey of Pennsylvania.—Besides the gece 
by Professor H. C. Lewis, ete ss the survey has issued 
recently also the following repor 
eport D3, Vol. II, Part I: The ‘Gooner of the South Moun- 
tain belt of Berks County by E. V. D’Invilliers, with maps and 
plates, and an atlas, 1 
Atlas to D4, Vol. Ta nd II. 
port : a revision of the Bituminous Coal Measures of 
Clearfield County; by H. M. Chance. 198 pp. 8vo, with maps 
and sections. 
Atlas of the Western Middle Anthracite field to illustrate 
Report AA, Part I, Chas. A. Ashburner <a paler esha 
4. Paleontology of the ~— of New York, v v, Part Loa 
and figures of the Monomyaria of the Upp Helderberg, Hamilton . 
and © jae ee by James pera ate Geologist. 268 
Species described are those belongin to the families oe 
ide, Pterinide, Aviculide, Ambonychide and Mytilide. The 
Lamellibranchiates discovered in the New York Paleozoic 10W 
Oriskany about 600, and 500 are from the roups above the 
skan 
lent, and the work is a oe contribution to Zoological science 28 
well as y Pa i Paleonto 
5. Octahedrite as an ‘allerstioncprosduce of Titanite.—Mr. J. 8. 
DiieR has made some interesting observations on the occurrence 
of octabieatties (anatase) as a product of the alteration of titanite 
in the biotite-amphibole-granite of the Troas. After de 
scrib- 
ing the unaltered rock in regard to the more conspicuous char- 
& 
