liev/etr of Reci'itf G'ohxj'cal Littfcture. i'u 
<>n (Jw structure and (ifjc of tlir St<)<-l:l>ri<l</r limrKloiic in llir Vrrninnl 
valley. By T. Nelson Dale. Bulletin, (1. y. A., vol. iii, pp. 514-519, 
with a map plate and two figures in the text. The entire thickness 
of the Stockbridge limestone in Rutland county, Vt., appears to be 
about 1,200 feet, of which the lower part, measuring about 470 feet, is 
of Cambrian age, as known by a Huolitlies bed at West Clarendon. 
The upper part of this limestone, however, according to its fossils 
collected by Rev. Augustus Wing and Mr. A. F. Foerste, is of Lower 
Silurian age, to which also belongs a part, if not all, of the overlying 
mass of Schist. 
SupjiOned int<'r(/larial slicll-hcilx in Sli mpsliirr, I'Jni/land. Wy < K Kimcd- 
EKicK Whkiut. Bulletin, (t. S. a., vol. lu, pp. 505-508. A shell-bed 
discovered by Mr. Prentiss Baldwin and the author at Ketley, near 
Wellington, in Shropshire, containing many specimens of Tnrritetla 
cominnnia and a few other species, had a thickness of two or three 
inches, underlain by sand and gravel 25 or 30 feet thick and overlain 
by 10 to 15 feet of till. These marine shells, occurring about 500 feet 
above the sea, are ascribed, like those found up to about 1,100 feet at 
Macclesfield and 1,400 feet on INIoel Tryfaen,to erosion from the bed of 
the Ii'ish sea and transportation to their present position i)y an ice- 
sheet flowing southward from the Scottish highhxnds and from Ire- 
land. As shown by Prof. Percy F. Kendall, the distribution of Scottish 
boulders is co-extensive with the occurrence of these marine sliells 
and shell fragments. Such interpretation, according to Wright and 
Kendall, removes the principal ground for the supposition of an inter- 
glacial epoch in England. The lower and upper till are regarded as 
"probably the product not of two distinct glacial jjeriods, l)ut of minor 
episodes in a single period." 
Geoldtjii (if the rrihiJof ii^Jandx. By.losicrn St.wi.kv-Bkown. Bulletin 
G. S. A., vol. Ill, p]). 496-500. The Pribilof or Seal islands, consisting 
of basaltic outflows and tuff, rise from the almost level submarine 
plain whicli is covered by the shallow waters of Bering sea. St. Paul 
island, the largest member of the group, has a length of 12 miles and 
width of 6 to 8 miles. Its shores are low, and its surface is diversified 
bynumerous small volcanic cones irregularly grouped about tlie cen- 
tral crater, called Bogoslof, which is about 000 feet high. In m clitl" of 
tuff on this island, known as Black blull, which has been partly eroded 
by the sea, rounded calcareous clay fragments, contaiin"iig fossil shells, 
are found; and each of the fifteen species collected here by the author 
and identified by Dr. William 11. Dull, has living representatives in 
Bering sea. These fossiliferous fragments are explained by their be- 
ing "caught up mechanically from the adjacent sea bottom and dis- 
tributed through the cone during its creation." 
St. George island, lying about .% miles southeast of St. Paul, is 
slightly smaller. It differs from St. Paul in being a mesa, MOO to 1,000 
feet high, bordered by a precij)itous shore line. Its later lava Mows 
issued from a vent neiir the middle of the island and from another on 
its northern shore, now more tlian liiilf eaten away by tlu; se.-i. 
