346 THE CARBONIFEROUS SYSTEM. 



Brought forward 53* 16 



Manganese . . . '50 



Sulphur .... 25-42 



Carbonate of lime . . '92 



80-00 



Carboniferous District of Antigonish County. 



The Pictou district is bounded on the south by an irregular tract of 

 slaty and syenitic rocks, forming the hills of Merigomish and those 

 extending toward Cape St George. In the coast section, the last and 

 lowest rocks of the Pictou Carboniferous district are seen near M'Cara's 

 Brook to rest unconformably on slates to be subsequently described, 

 and which are of Silurian age. Passing these, towards Malignant 

 Cove, the lower Carboniferous conglomerates and sandstones are again 

 seen, but very much disturbed and altered by heat. It is a very 

 instructive study to compare the soft conglomerates and their inter- 

 stratified trap at M'Cara's Brook, with the continuation of the same 

 beds eastward of Arisaig Pier, where they appear fused into hard 

 quartzose rocks, in some of which the original texture is entirely obli- 

 terated. 



The conglomerate and sandstone seen at Malignant Cove conduct us 

 through a gap in the metamorphic hills, or round by Cape St George, 

 to the gypsiferous rocks of the neighbourhood of Antigonish. These 

 run along the south side of the metamorphic hills with general 

 southerly dips, from Cape St George to the western extremity of this 

 district, and exhibit a very large development of the gypsums and 

 limestones, the latter containing some of the fossils already noticed in 

 other localities. 



At Cape St George, the Lower Carboniferous conglomerates appear 

 to be largely developed, and associated with these there are sandstones 

 and shales containing fossil plants, and also a bed of gypsum. 



I am indebted to Dr Honeyman for specimens of these shales, 

 showing Lepidodendron corrugatum, the most characteristic plant of 

 the Lower Carboniferous Coal measures, and a stipe of Ci/cloj^teris 

 Acadica. They also hold scales of Acrolepis and PalcBoniscus. The 

 shale and the fossils are precisely similar to those of Horton Bluff. 

 Similar shales occur farther to the westward, holding the same fossils, 

 and are stated to be so rich in bituminous matters that hopes are 

 entertained of utilizing them as a source of coal oil. The beds noticed 

 below as occurring in Right's River, are probably of the same age. 

 In the vicinity of Morristown there are red sandstones, conglomerate, 



