Beview of' Jiecenf GeolocfiGal Literature. 261 
The Origin of the Arkansas Novaculites. By L. S. Griswold. (Proc. 
Boston Soc. Nat. Hist., vol. 26, pp. 414-421. Author's edition, Feb. 9, 
1895.) In the Quarterly Journal of the Geological Society of London, 
Aug., 1894, Mr. Fi-ank Rutley brought forward arguments to show that 
the novaculites of Arkansas were siliceovis replacements of dolomite or 
of dolomitic limestone beds. (His paper, "On the Origin of certain No- 
vaculites and Quartzites," was reviewed in the American Geologist, 
vol. 14, p. 253, Oct., 1894.) This explanation of the origin of the novac- 
ulites is at variance with that adopted by Mr. Griswold, who had made 
a careful examination of and a report on these peculiar rocks (Annual 
Report of the Geological Survey of Arkansas for 1893, vol. 3). In the 
present pajjer Mr. Griswold defends his theory of the formation of these 
novaculites, maintaining that they are simple, fine grained, siliceous 
sediments mechanically deposited, i. e., that they are sandstones of very 
fine grain. He does not regard the presence of irregularly rhomb- 
shaped cavities, once probably filled with some carbonate (dolomite), as 
evidence that the whole rock has been derived fi-om a dol6mite by sili- 
ceous replacement, and he argues that the novaculite is not composed 
of chalcedonic silica as thought by Mr. Rutley. u. s. g. 
Ueber x>alcEOZoische Faunen aiis Asia und Nordafrika. By F. 
Frech. (Neues Jahrb. ftir Mineral., etc. Jahrg. 1895, Bd. 2, Heft. 1, 
jjp. 47-37.) This paper contains interesting paleontologic news from 
various remote corners of the world, the facts having been brought to- 
gether, as the author states, in pursuance of his plan for the completion 
of F. Roemer's "Lethsea Palajozoica." From the Lunschau, a moun- 
tain near Naaking, China, are described fossils from the lower Ordovi- 
jciari, Asaphus, Endoceras duplex, Raphistoma sinense, sp. nov., etc. 
From the province of Schantung in north China and from the Yang-tse 
in, middle China is a well defined Carboniferous limeston,e fauna with a 
variety of characteristic species. The province of Kiaug-su also affords 
a few Permian species, and the upper faunas of this formation, with 
Gastrioceras and Paraceltites, have been found near Ning-kwo-hsien, in 
the province of Nganhwei. Persia, in the vicinity of lake Ooromiah, 
furnishes Carboniferous species, Productns, Spirifer striatns, Syringo- 
thyris, etc., and from Schaku Tschalkhune certain species of probable 
Permian age. An upper Devonian brachiopod fauna is reported in this 
vicinity, with Spirifer disjuncins, S. anossofi, Atrypa concentrica, 
Rhynchonella jnigniis, Orthis striatula, Orthotlietes umbraculvm, Pha- 
cops latifrnns, etc. 
Devonian brachiopods were described by Beyrich in 1852 from the 
Hammada, near Murzuk in Tripoli. These, thrc^ in number, are re- 
viewed by the author and two of them are shown to represent the genus 
.Liorhynchus and the third a well known Chcinvmg species, Spirifer 
mesaeostalis. ,t. m. r. 
Folds and Faults in Pennsylvania Anf/iracitc Beds. B,y Ben.iamin 
Smith Lyman, (Trans. Amer. Inst. Min. Eng., Atlanta meeting, 1895, 
pp. 1-43.) The author gives thirty-three plates containing 177 highly 
interesting and instructive sections, prepared from cross-section sheets 
