454 REVIEWS—GEOLOGICAL SURVEY OF CANADA. 
and show characteristic fossils, become more and more crystalline, and ultimately 
lose all traces of their organic contents. 
“ When the indications of copper ore in these rocks could be traced continuously 
to any distance, they, in every instance that came under my observation, preserved 
a direction coinciding with the stratification. In three instances the quantity of 
ore appeared suiiicient to justify the recommendation of crop trials, one being in 
Upton, another in Ascott, and a third in Inverness. In the first, which occurred 
on the fifty-first lot of the twenty-first range of the township mentioned, the cop- 
per ore, consisting of pure pyrites, was in a mass of greyish-white and reddish- 
grey, compact, sub-crystalline, yellowish-weathering limestone, which it inter- 
sected in reticulating veins of from one quarter of an inch to an inch in thickness, 
always inclosed between walls of highly erystalline cale spar, associated occasion- 
ally with a little quartz. These reticulating veins constituted bunches, and 
several of these bunches could be traced in succession in the strike of the lime- 
stone. These reticulating veins of copper pyrites did not differ essentially in their 
arrangement from the thin veins of quartz which vary frequently, and thin veins 
of titaniferous, specular, and magnetic iron ores which less often, have been found 
intersecting the magnesian limestones of this formation in various places, and, I 
presume, must be regarded as veins of segregation, filling up fissures which do 
not pass beyond the limits of the limestone. 
“A bed of breccia or conglomerate, of which both the fragments and the matrix 
are calcareous, appears to overlie the greyish-white limestone, and, like it, is 
marked by copper pyrites. A reddish-grey limestone, quarried in the neighbour- 
hood, is supposed to underlie the greyish-white rock, though not seen in contact 
with it. This, towards the top, was interstratified with yellowish-white beds, and 
towards the bottom with red shale: no copper ore was observed in the reddish- 
grey limestone. The breadth across the whole of the beds may be about a quarter 
of amile. The general dip is towards the south-east, and the inclination varies 
from ten to twenty-seven cegrees, but the data are not sufficiently clear to estab- 
lish the total thickness. 
“Tn one of the Reports in question, it was indicated that this band of limestone 
appeared to hold a course from its position in Upton, through the northern por- 
tion of Acton, into Wickham, where, on the twenty-sixth lot of the last range of 
the township, it was again marked by the occurrence of copper ore. The bearing 
of the band in this course would approach to north-east; and about ten miles 
south-eastward from it, another range of calcareous exposures exists in a nearly 
parallel course, one of the exposures occurring on the thirty-eighth lot of the 
seventh range of Acton, and another on the eighteenth lot of the ninth range of 
Wickham, where additional indications of copper ore exists. A third north- 
eastward run of the same description of limestone extends from the thirty-second 
lot of the third range of Acton, to the fourteenth lot of the tenth range of 
Wickham, and on both these lots the rock is again marked by copper ore, as well 
as on the thirty-second lot of the fifth range of Acton, which is intermediate be- 
tween the other two positions. All these calcareous ranges, it was there explained, — 
most probably belong to one and the same band—the first and third being on the 
opposite sides of a trough-like form, which stretches from the neighbourhood of 
