Review of Recent Geological Literature. 1 2 1 
De Sydskdnska Rullstensdsarnes Vittnesbord in frdgan om Istidcns 
Kontinuitet. Af Jno. C. Moberg och N. O. Holst. Lund, 1899. 
This is an inquiry into the question of the existence or non-existence 
of proofs of an interglacial period in Sweden. 
This question was mooted in Sweden about 1865 when O. Torell dis- 
tins^uished a great lower glacial and a (younger) Baltic ice stream. In 
1873 Haimstrom showed that in southern Skania one can distinguish 
two separate sets of moraines. In 1884 G. de Geer wrote on the "later 
expansion of the Scandinavian land ice, and of the interglacial clays." 
It is claimed that there are two systems of boulder ridges in Skania; 
one, north to south produced in the earlier ice time, the other east to 
west due to the later or Baltic ice period. Moberg and Holm claim 
that these two systems run into each other by curves, etc., and are one 
and the same system. 
The proof against two ice periods the authors think decisive, and 
call upon the geologists who uphold the opposite view to explain how 
the evidence drawn from these boulder ridges, can accord with their 
theory. 
The article is of twelve pages with a geological map of Skania, show- 
ing the boulder ridges. g. f. m. 
Preliminary Notice of the Etchetninian Fauna of Cape Breton, by 
G. F. Matthew. (Nat. Hist. Soc. N. Brunswick. Bull, xviii, vol. iv, 
p. 198.) 
This is a description of the Etcheminian (Eopaleozoic) species col- 
lected in Cape Breton. Those of the same age collected in Newfound- 
land, were d2scribed in an earlier part of this Bulletin. The Newfound- 
land fossils are quite dissimilar to them, though apparently in rocks of 
the same age, In Cape Breton the genera are such as are found in the 
Protolenus fauna in New Brunswick, but the species are all different. 
It is stated that the physical conditions of the Etcheminian time in 
Cape Breton' were very similar to those in New Brunswick. 
The fossils described are all either brachiopods or ostracods. Two 
species of Lingulslla and two of Leptobolus are described. An Obolus 
i5d^scribsd under a new sub-genus distinguished by approximated vas- 
cular trunks, etc. A species of Acrothele and one of Acrotreta are de- 
scribed. A new genus of ostracods is proposed (Bradoria) for species 
having a prominent ocular (?) tuburcle, three new species are described 
under it. Also two new species of Schmidtella are described. 
The paper is illustrated with four plates of figures and two sections. 
A Dictionary of altitudes in the United States [third edition). 
Compiled by Henry Gannett. (U. S. Geol. Survey, Bull. 160, 775 pp, 
1899.) 
The first edition of this convenient book of reference was issued 
in 1884 as Bulletin 5, and the second in 1891 as Bulletin 76. The third 
edition is greatly enlarged over the earlier ones, and thus its useful- 
ness and value are increased. The author has returned to the alpha- 
betical arrangement by states, and localities under eacli state, used in 
