80 
PERMIAN BRECCIA OF LEICESTERSHIRE. 
Feb., 1892. 
having a faint cleavage. Also from Charnwood. (85.) A 
flake of faintly banded flinty argillite, probably with some 
minute quartz grains. (86.) A triangular, thick, flake-like 
piece of a rock, intermediate in character between 84 and 85, 
and belonging to the same series. (88.) A fairly angular 
fragment of a very similar rock; also from Charnwood. 
(129.) From Linton and Coton Park Colliery. A somewhat 
cuboidal mass, roughly about 4in. across, the faces being 
denned by joint or bedding planes, the angles and corners 
somewhat rounded. A fairly well banded argillite, probably 
from the Charnwood series. (4, 17, 22, 65, 79, 80, 81, 83, 
133.) Nine fragments which bear a close resemblance to the 
argillites of Charnwood. The specimens are all more or less 
angular, one at least being partly bounded by surfaces 
apparently due to joints or cleavage. The angles and in 
some cases the sides are somewhat rounded, although almost 
unworn edges of fracture still occur in one irregular fragment 
from the tunnel, Wooden Box. An imperfect cleavage can be 
traced in several of the specimens, sometimes causing them 
to flake off. Four of the specimens are a pale-greenish tint, 
weathering lighter or with red staining ; the others are of a 
dark, dull-greenish or slate colour. All are argillite, two or 
three having a very flinty character; in one a lamination is 
developed on the weathered surface, and on another, from 
Overseal, are striations. Microscopic examination affords 
little additional detail; in one slide chlorite can be identified, 
and in another a transparent mineral, probably felspar. All 
these rocks may be taken as almost certainly derived from 
the Charnwood series, some having a close relation to such 
flinty argillites as those of Grace Dieu and Whittle Hill. 
The six specimens which follow belong most probably to the 
same group. (32.) One, however, is stained a deep claret 
colour, so that it is impossible to be certain about its relations. 
(61.) Another is a pale greenisli-grey, very compact, possibly 
with a slight cleavage. (82.) Another, from Woodville, a 
greenish, subangular fragment of a very fine grained (? quart- 
zose) argillite. (77.) One polygonal fragment occurs of a 
more definitely compact, greenish-grey argillite. The form is 
an elongated rhomboid, the faces being determined by the 
cleavage planes. The rock bears some resemblance to the 
honestones of Whittle Hill. (138.) A fragment from Over¬ 
seal of rather hard, slightly micaceous, purplish slate, pos¬ 
sibly connected with such a series as that of the Brande 
(striated). (78.) A very fine grained quartzose rock of a 
dull green colour. It might represent the cleaved condition 
of a rock similar to 105. (89, 90.) Two flattish, more or 
less oblong fragments, with rounded edges and corners, of a 
