‘ 
480 Scientific Intelligence. 
capic rocks, constituting, with a series of avenge metalliferous 
slates, the “ Cobequid group” of the author, and resembling much 
more the Skiddaw and Borrowdale formations of the English 
geologists, than the contemporaneous Lower Silurian groups o 
inland America. There are, however, Leng ee points of resem- 
blance sti these paculinn Silurian rocks o cadia 
Provinces and those of New England, saat her. constitute a re- 
uuilcabie’ ius of the difference that may obtain in contem- 
poraneous deposits belonging to areas of quiet aqueous sedimenta- 
and of igneous activity. They show very clearly how unsafe 
it may be, without proper whi ie to apply the geological types 
of one area to those of anot 
Below these peculiar Silurian rocks, are thick deposits of Cam- 
brian age, on the whole less modified by con temporaneous igneous 
—. and in some places richly poor me In Cape Breton 
ere have recently been recognized fossils indicating 
Carebrian horizon, resembling that of the ‘English i hos 
Below this is the Acadian series, so rich in Conoe 
and other forms of the Menevian type, é tage © of 
Barrande. Still lower, , according to the author, are the quartzites 
on these points, and references to the field geologists who have 
been working them out, will be found in the publication itself. 
2. Recherches expérimentales cassures qui traversent 
Pécorce terrestre, particulidrement celles ui sont connues pour les 
noms de joints et et de failles par M. Daverke. (Comptes Rendus, 
lxxxvi, 1878).—M. Daubrée, whose experiments relative to meteor- 
ites were re toina recent number of this Journal (vol. xiv, 
occurrence in rock-mai 
iomets, ‘gee eraser Se e — hist he was as sions a plate 
aes bstance 2 form ned an ae 
“producing facture pitbcansc honk eet as 20°. 
The Sar wesliy see Goistiok caets pine oree ont 90 cm. 
