Atithors' Catalogue. 53 
however, that these valley stride running southwest may be attributable 
to deflection of that part of the Laurentide ice-sheet at its time of final 
melting, which interpretation seems to the reviewer more probable. 
According to this view, the western front of the ice-sheet that covered 
the St. Lawrence valley, holding a glacial lake on its southwest side, 
retreated northeasterly along a great extent of the valley and remained 
latest in the vicinity of Quebec or farther east, finally disappearing from 
the valley while yet large tracts of ice enveloped the higher country on 
the south and north. w. u. 
Das Palceozoiciini Polnischen Mittelgebirge. By Dr. George 
GUBICH. (Trans. Imjierial Mineralogical Society of Russia, vol. 
XXX, i8g6.) 
The district described in this memoir is in southern Poland, mainly 
in the country between and around Kielce and Opatow. This region 
has been subjected to considerable oscillation, and the rocks are folded 
and faulted to a marked degree. The geological section extends from 
the Cambrian to the top of the Devonian, and the strata reach their 
greatest development in the Devonian. The Cambrian is represented 
by a single member, the Silurian by four members, and the Devonian 
by twenty. The Devonian fauna is especially rich, and represents, to- 
gether with others, the typical zones of Rhynchonella caboides, Stringo- 
cephahis burtini, and Goniatites intiwtescejis, so characteristic of cer- 
tain faunas and horizons in other parts of the world. 
The new genera described comprise Plagiopora, a tabulate coral; 
CcratopJiylhim and Hexagoji-itni cyathophylloid corals; Spirillopora. a 
bryozoan; and four genera of ostracods, Anfifo//iis, Trigoiiocarts, Poly- 
zygaria, and PoUtiiella. 
Interesting studies are made on the amount of crustal oscillation, 
and the nature of the sediments, whether shore, near shore, off shore, 
or deep sea. These observations are plotted in curves, on tables of 
the geological succession for various localities. c. e. b. 
MONTHLY AUTHORS' CATALOGUE 
OF American Geological Literature, 
Arranged Alphabetically.* 
Agassiz, Alexander. 
A visit to the Great Barrier reef of Australia in the steamer "Croy- 
don." during April and May, 1896. (Bull. Mus. Comp. Zool., vol. 28, — 
Geol. ser. vol. 3,— no. 4, pp. 95-148, 42 pis., Apr. 1898.) 
*Tlu.s list includes titles of articles received up to the 20th of the preceding 
month, including general geology, physiography, paleontology, petrology and 
mineralogy. 
