NOVA SCOTIAN GEOLOGY —HONEYMAN. 207 
exposures on the line of strike. I found the rocks exposed im 
the course of an adjoining brook. I followed these towards 
Springville until I came to lower carboniferous rocks, which 
separate the strata under examination from the strata of Iron 
Ore (No. 1) on the nerth side of the river. Afterwards I ex- 
amined the strata of the division 5 of the section which I found 
in the river without any carboniferous intervention between 
north and south, and in proximity to McPhee’s archaan outcrops 
In this way the areas of pre-carboniferous rocks having Ivon ore 
on the one side of the river, were connected directly with the 
fossiliferous and pre-carboniferous rocks on the southside. This 
seemed to be one important element in correlation. Proceeding 
westward, down the river on its south side, I found one brook 
with a mill-dam ; here is another exposure of the strata under 
examimation. Still farther at Pleasant Valley another breok 
occurs having a mill-dam, and an exposure of the same 
strata. In addition I observed strata of hghter colour and 
ereater compactness, I readily recognized a lithological feature of 
frequent occurrence at mill seats on Sutherland’s river and its 
branches, where paleeontology is available for the solution of 
difficulties. There I had to refer the corresponding strata to A 
and B B’, middle silurian. If lithological evidence is worth any- 
thing in correlation, it surely is of some weight in the same dis- 
trict even at the distance of 9 or 10. miles. 
The next exposure is in the brook east of the situs of 
Tron ore, (No. 3,) McDonald’s brook. Here we have the best ex- 
posure of the strata. Along this brook Iexamined the strata toa 
considerable distance southward in search of a continuation of 
the Iron ore without success. Returning I reached an old mill- 
dam having strata of the same lithological character as the pre- 
ceding, indications of A, B and B’, middle silurian. Proceeding 
still along the bed of the brook, I found, after a considerable inter- 
val of obscurity, compact strata, having a southerly dip. These 
strata are hard and jointed with films of micaccous oxide of iron 
in the joints. Succeeding these at the bridge which crosses the 
road running up the south side of the river, I found black 
slates having obscure fossils, but which I have little doubt are of 
