HONEYMAN — ON THE GEOLOGY OF NOYA SCOTIA. 67 



stone, a continuation of axis No. 1, and overlaid unconformably 

 by lower carboniferous grits and limestones. I found also the 

 greenstone extending into the lower carboniferous formation, some 

 distance beyond the silurian strata. The northern extremity thus 

 ends in the lower carboniferous of McLellan's brook, while the 

 southern ends at the southern carboniferous of East Branch, East 

 River ; — the length of the axis being six and a quarter miles. 

 The 1st part giving direction to the series of silurian strata, 

 as far as Holmes's Brook, Springville ; the 2d giving a different 

 direction as far as McLean's limekiln, or rather Mcintosh's in the 

 rear of McLean's ; the 3d giving direction to the remaining strata 

 of Irish Mountain and Cross Brook. Returning to the part of 

 Cross Brook which is in my line of section, from the gypsum on 

 the west side of Irish Mountain to Sutherland's river, I crossed the 

 Clinton strata until I reached McDonald's, senr., where I found an 

 outcrop of Medina sandstone, with its characteristic petraia consi- 

 derably altered, resting upon greenstone of axis 1. Here the area 

 of the outcrop of greenstone is considerable, being about two 

 hundred paces across. Then comes a wide band of metamor- 

 phosed strata, corresponding with those of the other side of the 

 anticlinal, but much altered, and to all appearance destitute of fos- 

 sils. These extend lengthwise, and terminate partly on a mountain 

 east of the northern extremity of the axis ; part pass over McLel- 

 lan's brook into the mountains, called McLellan's Mountain, form- 

 ing the western side. Against the back of these silurian strata, 

 lower carboniferous grits and limestone rest. The junction is seen 

 in McLellan's brook, above Eraser's. In this lower carboniferous 

 area lies the thick band of limestone on which the house of the late 

 Rev. Dr. McGillivray is built, and also an outcrop of black lime- 

 stone at the Cross Brook bridge, near McGillivray's. Some dis- 

 tance from this junction of lower carboniferous and middle Clinton (?) 

 strata, or about three quarters of a mile, as the crow flies, is a fine 

 section of strata, on the site of a saw-mill, having abundance 

 of lower Helderberg fossils. I was rather taken by surprise 

 when I came upon this fossiliferous outcrop, as the character of the 

 underlying strata did not lead me to expect it. This fossiliferous 

 band is exposed about the length of the eighth of a mile in the bed 



