Review of Recent Geological Literature. 183 
geologically not distant we may expect to see the course of these great 
rivers reversed and a Mediasian sea occupying southern Siberia. 
UntersucJiungen ueber Gesteine unci Mineralien aus WeH Indien, von J. 
H.Kloos. (Samml. d. Geol. Reichs-Mus. in Leiden, 1889, p. 169). The 
former part of this work was noticed in the Geologist on p. 61, vol. i. 
The rocks described in this part are from Dutch Guiana, and constitute 
a part of the collection which was made by professor Martin and depos- 
ited in the Leiden museum. The molluscan fauna was described and 
illustrated in the former part by Dr. J. Lorie and M. M. Schepman, 
and indicate a late Tertiary age for the fossiliferous rocks. Mr. Kloos 
gives detailed microscopic descriptions of the massive rocks, including 
augite-audesyte, granite (containing augite), diabase (and amphibol- 
yte), crystalline schists, chlorite schist and a peculiar veined and 
schistose rock having a porphyritic structure ; also uralitic schist and 
hornblende gneiss. The work is illustrated by eighteen figures of 
microscopic thin sections. 
A catalogue of North American Palxozoic Crustacea confined to the non- 
trilohitic genera and species. By Anthony W. Vogdes. Author's 
edition. (From the Annals of the New York Academy of Sciences, 
vol. V, No. 1, 1889). The list is annotated, and shows a careful and 
laborious search in American literature. Some of the genera are 
figured, and nearly all have author's diagnosis republished from the 
original descriptions. 
Note on the discovery of Trilobites in the Neoholus beds of the Salt-Range. 
By William King. (Records of the Geological Survey of India; Vol. 
XXII, Part 3, 1889, pp. 153-157.) The importance of the discovery of 
trilobites in the Neobolus beds of India can hardly be overestimated. 
These beds have been the subject of considerable controversy among 
Indian geologists; the beds being variously called Permian, Lower 
Carboniferous and Silurian. The discovery of trilobites, which Dr. 
Waagen, the palaeontologist, says undoubtedly belong to Conocephali- 
dse and Olenidx, at last proves the true position of these beds which 
must now" fall even below the Silurian to "the upper region of the 
Lower Cambrian." One specimen, according to Dr. Waagen, is very 
nearly related to Conocephalites formosus Hartt. This remarkable dis- 
covery is expected to be fully treated in the forthcoming parts of Vol. 
iv of the Salt-Range fossils and we shall wait with much interest the 
publication of these results.* 
Elemente der Palxontologie. By Gustav Stein mann and Ludwig 
DcEDERLEiN. Part I, pp. 1-33G, 1889. Part ii, pp, 337-848, 1890. W. 
Engleinan, Leipzig. This work is on a plan simihir to Zittel's master- 
work "Handbuch der Palreontologie ;'' the classification differs some- 
what and the work is not so profusely illustrated as Zittel's, there 
being 609 figures of invertebrates as against 1,667 figures in Zittel ; the 
latter work also containing almost twice as many pages as the former. 
The work on the whole will form a good sub stitute for Zittel to those 
*Compan American Geologist, vol iv, p. 60. 
