202 NOVA SCOTIAN GEOLOGY. — HONEYMAN. 



metamorphic than in the type, and the fossils, generally, are less- 

 perfectly preserved. C strata here correspond and differ in like 

 manner when compared with the typical strata at Knoydart,. 

 Arisaig Township. The Cephalopoda are as large as in the type. 

 An orthoceras at Springville is the largest found in Nova- 

 Scotia. Similar species appear in groups, as in the type. They 

 occur in the same relative position. Remarkable forms are also 

 found in the two localities. Here the strata are more highly 

 metamorphic. This action has also affected the state of preserva- 

 tion of the fossils. They are generally casts. Strata D may be 

 regarded as extending from the north end of Irish Mountain to 

 Holmes' Brook. Before reaching McLean's, however, they seem to 

 break and their course to change. At Mackintosh's brooklet they 

 make a sort of water-fall, near their junction with the Carbon- 

 iferous Sandstones that underlie McLean's Limestone. From this 

 brook to Holmes' brook we have the D strata of division (1). Their 

 width is considerable. Their outcrop, with fossils, was followed 

 to some distance behind David's Lake. At the back of Irish 

 Mountain C strata possibly exist among the strata of the abrupt 

 descent to Cross Brook. They were not detected from want of 

 fossils. At Holmes' Brook their upper part becomes distinct in 

 closest contact with Lower Carboniferous Limestone. Their im- 

 mediate contact forms a breccia. Here the water sinks, leaving 

 the remainder of the brook dry in summer. The water that has 

 disappeared after a subterranean flow, reappears at Holmes' sluice 

 and flows sub diu to the river. Limestone and C strata are seen 

 in approximate contact at the opening ; in the strata east of the 

 sluice the large orthoceras was found and other characteristic 

 fossils. In an outcrop not far from the road crossing, on the same 

 side of the sluice, other characteristic fossils were found. The 

 same strata are found in contact with the limestone on the river 

 side at McPhee's. These strata passing along N. E. on the N.. 

 side of the river form mountains of steep ascent and considerable 

 elevation. In some places the strata are bare, especially towards 

 the mountain summit, resembling a house top of high pitch. The 

 lower strata of McGillivray's pasture continue their rampart 

 course with a depression on the left onwards to the end of the 



