186 Th<- Anil ricHn (ruDloijiHt. September, IWtl 
(iUiciid ijrDorcx tit tin xDutlii rn iiuirijiii nf the Drift. By P. Max Foshay 
and RiciiAKD R. HiCE, Bull., G. S. A., vol. ii, pp. 457-464, with a plate 
and one figure in the text; April 27, 1891. This interesting paper des- 
cribes the terminal moraine, kames, terraces, potholes, and glaciated 
rock surfaces near the drift margin, in the valley of Beaver river, north- 
western Pennsylvania. Powerful glacial erosion is shown two miles or 
more south of the terminal moraine mapped by Lewis and Wright, upon 
the area of "the fringe" of fre»iuent boulders, which extends some miles 
in front of the moraine in this neighoohood. 
PoKt-plciKtocine Kiihuidi'itir nrxHK f/lnrinl (hims. By .1. W. Si'ENCKK. 
Bull., G. S. A., vol. ii, pp. 465-476, with a map; April 30, 1891. Shortly 
before the deposition of the glacial drift, there is shown to have been an 
elevation of the drift-bearing areas over 3,000 feet higher than now, and 
]>rohably for a brief time to over 5,000 feet. Succeeding this uplift, the 
author believes that a subsidence of the land carried it so far beneath 
the sea level that the now raised beach lines partially surrounding the 
great lakes of the St. Lawrence were shores of the ocean. Recent 
emergence of the land, according to this view, is recorded by the suc- 
cession of these beaches at different levels; and the alternative explana- 
tion which attributes the beaches to glacial lakes of fresh water dammed 
by a receding ice-sheet is disputed. A reprint of this paper, with slight 
changes appeared in the June number of the Geological Magazine. 
On the Geology of Quebec und enciroiis. By Henry >L Ami, of the Geo- 
logical survey of Canada. Bull. G. S. A., vol. ii, pp. 477-502, with seven 
sections; April 30, 1891, The intricate and much debated structure and 
relations of the Cambro-Silurian terranes of (Quebec and its vicinity are 
liere carefully discussed, with lists of the fossils collected in numerous 
localities by the author and others. Mr. Ami advocates the retention of 
the name (Quebec group, and considers the group to comprise three 
natural and well-marked parts, lying next below the Trenton limestone 
in the following descending order: The Quebec, or upper division; the 
L6vis or middle division: and the Sillery or lower division. The rocks 
thus grouped are referred by Selwyn to the Hudson-Utica horizon above,, 
instead of below, the Trenton. 
Some New Species of Crinoida und Blmtoids. By Phof. R. R. Rowley 
and SiD. J. Hare. In The Kansas City Scientist for August 1891, we 
have what is practically a continuation of the paper on Some New Species 
of Echinodeniiata by the same authors in the same magazine for July. 
The present paper contains descriptions of twelve new species, all of 
which are illustrated by figures drawn by professor Rowley. 
Adtance sheets fioiu the 17th Report of the (ieohnjiced Sarcey of the State 
of Indiana, Prof. S. S. Goriiy, State Geologist. Paln-ontoloyy. By S. 
A. Miller. ]\Ir. Miller's contribution to the 17th Report of the Geologi- 
cal survey of Indiana, embraces 95 pages of text, and 20 plates with ap- 
projiriate descriptions. 13(i sjjecies of fossils ar»'descril)ed, and of these 
126 are new. Tlie paper opens with remarks on the geologic formations 
