NOVA SCOTIAN GEOLOGY. — HONEYMAN. 207 



•exposures on the line of strike. I found the rocks exposed in 

 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 north 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 archcean outcrops. 

 In this way the areas of pre-carboniferous rocks having Iron ore 

 on the one side of the river, were connected directly with the 

 fossiliferous and pre-carboniferous rocks on the south side. 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 

 examination. Still further at Pleasant Valley another brook 

 occurs having a mill-dam, and an exposure of the same 

 strata. In addition I observed strata of lighter colour and 

 greater compactness, I readily recognized a lithological feature of 

 frequent occurrence at mill seats on Sutherland's river and its 

 branches, where palaeontology is available for the solution of 

 difficulties. There I had to refer ths 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 

 Iron ore (No. 3), McDonald's brook. Here we have the best ex- 

 posure of the strata. Along this brook I examined the strata to a 

 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 micaceous oxide of iron 

 in the ioints. 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 



