THE PICTOU COAL FIELD — POOLE. 259 



below Riverton railwaj^ siding on the bank of the river and with 

 a southerly dip rest on strata elsewhere described as the Fish- 

 pool series and possibly Devonian. Up the river and about 

 Ferrona exposures of these rocks are numerous. Below Riverton 

 close to the Intercolonial railway, above the mouth of McKay's 

 brook, an aggregation of limestone blocks has been quarried. 

 There is probably here an outlier of the Lower Carboniferous 

 resting on the Fishpool series. 



Half a mile to the westward of the Riverton siding on Simon 

 McKay's farm a contact of the older limestone series is seen. The 

 limestone is fossiliferous but the forms are obscure, and the rock 

 is much shattered. From this point along the southerly rim of the 

 Westville coal basin no exposures are known until Highfield farm 

 is reached. Here a hill of older rock protrudes with several 

 groups of the carboniferous lying on its flanks. The central por- 

 tion has rocks identical with those north of Fishpools on the East 

 river, and presumably Devonian. They are to be seen at the 

 small cemetery on Munro's farm. The contact of the Limestone 

 series with the Millstone Grit is possibly indicated to the west 

 of the hill on McLeod's brook 100 yards below Pickens street 

 bridge where rubbly sandstones overlie thin bedded ripple marked 

 red rocks dipping N. 10°, W. 72°, and are succeeded within a 

 short distance by strata that contain remains of plants, and 

 are sufficiently well bedded to answer for foundation stone, 

 a quality which does not belong to the stone higher up 

 the brook. The hill is assumed to have the limestone series on 

 the southern flanks. On its northern slope there are no ex- 

 posures. 



To the west of McLeod's brook the surface of the land slo; es 

 to the northward and is drained by a brook that flows by Ross 

 and Urquhart farms to the Middle river. The branches of this 

 brook supply several exposures of conglomerates sandstones and 

 red shales, indicating by the various directions in which the 

 strata dip, that the rocks are there much disturbed. At the forks 

 of the brook are grey conglomerates associated with sandstones 

 containing fragment of plants ; beds that are assumed to belong 

 to the base of the Millstone Grit, while higher up the branches 



