234 Reviews—Dr. Charles Barrois—Geology of Asturias. 
on changes of climate, and how they have been brought about, con- 
clude the work, and furnish us with a very careful and impartial 
statement of our present knowledge on these debateable subjects. 
Full references are given to memoirs that treat in detail of the 
subjects sketched and discussed, and we are glad to notice that the 
labours of our American geological brethren are duly appreciated. 
The illustrations are very clear and in many cases pictorial. The work 
was most highly spoken of in the former notice: it is now brought up 
to date, and we can only express our hope that it will find its way into 
the library of every working geologist. 
GroLocy oF ASTURIAS AND GALICIA. 
(Frrst Norice.) 
IV.—ReEcHERCHES SUR LES TERRAINS ANCIENS DES ASTURIES ET DE LA 
Gatice. Par Dr. CHartes Barrors. Extrait des Mémoires de la 
Soc. Géol. du Nord. Tome 2, 1882. 
HIS great work, which occupies 630 quarto pages of letter-press, 
and is accompanied by 20 plates, details the observations and 
researches of the author, commenced in 1877, and communicated in 
parts to the ‘Société Géologique du Nord” during the years 1880 
and 1881. The district to which he has devoted so much labour is 
situated on the north-west coast of Spain, and had been proved to be 
of great interest by previous observers who had made known some of 
the treasures of its “‘ Primordial fauna” and of its Devonian rocks. 
In an Historical Introduction we are presented by Dr. Barrois with 
a sketch of these earlier writings and a list of the Memoirs, the first 
of which dates as far back as 1644, and among the authors of which 
we note the names of Schulz, Paillette, De Verneuil, Collomb, and 
Casiano de Prado. 
The first part of the work is devoted to Lithology, commencing 
with a description of the sedimentary rocks, comprising clay-slates, 
quartzites, limestones, mimophyres (a kind of porphyroid), granites, 
quartz-porphyries, diorites, diabases, etc. These are illustrated by 
three plates of microscopic sections. 
The second part is devoted to Paleontology, commencing with an 
account of the fossils of the Cambrian and Silurian rocks. Some new 
species are added, the author appending the initials C. B. to avoid the 
confusion that might arise with the name of Barrande. New species 
of Trilobites, Bilobites (Algee ?), and of several forms allied to Scolithes, 
and one new species of Zingulella are described and figured. 
The fauna of the Devonian and Carboniferous rocks is next taken 
into consideration. Several new species of Corals are described, and 
some are exquisitely reproduced by a process of ‘‘ Phototypie.” The 
Foraminifera, Sponges, Crinoidea, Polyzoa, Echinodermata, Brachio- 
poda, Lamellibranchiata, Gasteropoda, Cephalopoda, Pteropoda, Ostra- 
coda, Annelida, Trilobites, and one Ichthyodorulite are described, and 
many, including the new species, are figured. 
The third part of the work is devoted to Stratigraphy—to the com- 
position and succession of the strata. 
The Primitive rocks comprise a lower division of mica-schists, and 
