Conglomerates with Gneiss, Talcose Schists, gc. 375 
of the Pag ya ” off, perfectly correspond, and one part 
las never bee o slip over the other. In some minor 
e end where the rock is separated, 
and remain projecting hele the — surface. These joints 
k, 
do not always extend through the whole roc 
We should te glad to introduce is many — of speci- 
mens illustrating these statements. But one or two must 
suffi 
Fig. 1 will give some idea of an elongated pebble Hse Newport, 
orhick i is hy inches long and 3 inches across its broadest par 
Ae, ty iy A 
thi tj tj LG bg LILLIE 
Wigs LSE wee Lee 
oo: SB 
LL %e de Ss 
> ca 
"ale rth ne 
Ss 
* 
Fig. 2 shows a pebble 8 inches long with a pegs indentation. 
2. 
Perhaps I ought to add that oe the elongated pebbles partially 
or wholly lose their rounded for the ends, and begin to assu 
foliated or schistose aspect, and to ie somewhat blended with the talcose 
or micaceous cement. This though not general, is frequently the case. 
From these facts we could hardly avoid drawing the following 
piesa 
. This rock was once a conglomerate of the usual character, 
aus in the great abundance of the pebbles, ag it has subse. 
quently experienced great metamorphoses making the cement 
crystalline and schistose, and elongating — flattening the peb- 
bles, 2. The abhi must have been i state more or less 
y are elongated, flatten mr aa bent. If their 
their lasticity must of course 
‘0. 93.—May, 1 
pe 
plastic, when the 
shape ‘has been thus altere 
Am. Jour. Sci.—Srconp Sexrgs, Vor. XXXI, N 
49 ( 
