524 ~  - Reports and Proceedings— 
Canada and Scotland (Quart. Journ. Geol. Soc. vol. xxxv. p. 370), the 
author in this paper announced the discovery of similar objects in the 
Silurian deposits of Dudley, Much Wenlock, Iron Bridge, Stoke Edith, 
and near Ludlow. He noticed from these Silurian rocks seven species 
of Hunicites, two of which, £. curtus and . unguiculus from the 
Wenlock, are new; nine species of Wnonites, of which six, namely, 
@. regularis, naviformis, preacutus, and tubulatus from the Wenlock, 
@. insignificans from the Upper Ludlow, and W@. aspersans from the 
Wenlock, and Upper Ludlow, are described as new; seven species of 
Arabellites, four of which are new, namely, A. extensus, sprcatus, and 
obtusus from the Wenlock, and 4. anglicus from the Wenlock and 
Upper Ludlow; further, Lumbriconereites basalis, Staurocephalites 
semula, sp.n., and Were:davus antiquus, sp.n., from the Wenlock 
group. Including varieties, 27 forms are noticed by the author, of 
which 21 are peculiar to the Wenlock group and 2 to the Ludlow, 
while 4 are common to the two groups. In the Wenlock there are 8 
forms already described from American rocks, 3 occurring in the 
Cincinnati group, 3 in the Clinton, and 2 in both groups of rocks. Of 
the Ludlow forms, 2 occur in the Cincinnati group, and 1 of these also 
in the Clinton. 
IT.—May 26, 1880.—Robert Etheridge, Esq., F.R.S., President, in 
the Chair.—The following communications were read :— 
1. “The Pre-Carboniferous Rocks of Charnwood Forest.” (Part III. 
Conclusion.) By Rev. E. Hill, M.A., F.G.S., and Prof. 'l. G. Bouney, 
MaAS Bonne) EeGeo: 
In their former communications the authors had paid less attention 
(from want of time) to the northern part of the forest than to the rest. 
This district has during the last two years engaged their special at- 
tention. ‘They had provisionally retained the name quartzite for the 
rocks exposed about Blackbrook, etc., probably the lowest visible on the 
forest. This name proves to be inappropriate, and they propose to 
call the group, which contains much fine detrital volcanic material, 
the Blackbrook Series. They have also reason to believe that the 
anticlinal fault is less than was supposed, and that we have here 
a fairly unbroken base for the forest rock already described. In this 
case there ought to be representatives of the great agglomeratic masses 
on the western side of the anticlinal (High Towers, etce.). The authors 
believe that they have found ‘these, though as much finer and more 
waterworn detritus, in the greenish grits above Longcliff and Buckhill. 
The authors also believe that they have succeeded in tracihg a coarse 
agglomerate with slate fragments round about three-fourths of the 
circumference of the forest. Further notes upon the district of Bardon 
Hill, Peldar Tor, and Sharpley are given, and the origin of the remark- 
able rock of the last, so like some of the Ardennes porphyroids, is 
discussed; the authors believe it to be a volcanic tuff, altered by the 
passage of water or of acid gases. Descriptions of the microscopic 
structure of some of the rock fragments included in the coarse 
agglomerate and of some of the slates are given. Also a notice of two 
small outbursts of igneous rock, of the northern syenite type, pre- 
viously unnoticed, are mentioned. 
