274 C. LAPWOKTH ON THE MOFFAT SERIES. 



flagstones interposed between the Grey Shales and the Barren Mud- 

 stone. It lies approximately along the general course of the main line 

 of fault that runs along the strike from the Wisp to Brockhope Burn, 

 and which for several miles has placed a narrow seam of greywacke 

 in the geographical centre of the band, dividing it into two parallel 

 lines of black shales. 



In some shallow scores in the middle of the Yellow Mire there 

 are some indifferent exposures of the central, and therefore oldest, 

 beds of the band. The deepest bed visible is the Pleurograptus- 

 linearis zone of the Upper Hartfell Shales. The black thin-bedded 

 shales of the zone with their white lines admit of immediate 

 identification. Fossils are rare ; P. linearis (Carr.) and Leptograptus 

 flaccidus (Hall) are both present. The white band at the summit of 

 the zone is very conspicuous, as are also the shivery mudstones of the 

 Barren beds. 



Of the southern leg of the anticlinal at this locality we know very 

 little; a few Birkhill forms may, however, be collected from the 

 scattered fragments of shale to the south of the scores. The strata 

 themselves are all hidden from sight by turf and moss. 



iii. Third or Whitehope Band. 



Whitehope Burn (fig. 11). — This band attains its greatest diameter 

 near the small cottage of Whitehope, to the west of Earl's Hill, where 

 a tolerably continuous transverse section is visible in the course of the 



Fig. 11. — Section below Whitehope Cottage. 



Easter Burn. Earl's Hill. 



D. Flagstones and grits. 



Cb. Grey shales with black bands, yielding Monograptzts Halli in relief. 

 Ca. Black pyritous flags with seams of variegated mudstones. Monograptus 

 gregarius, Eastrites peregrinzis, &c. 

 /. Fault. 



stream below the cottage. Near the northern edge of the band a thin 

 group of grey shales with black seams, yielding Monograptus Halli 

 (Barr.) and Bastrites maximus (Carr.), subsides below the grey- 

 wackes to the northward at a gentle angle. The presence of 

 these beds at this point is due to a small arch of the strata, above 

 which the greywackes pass unbroken in the steep hill-face to the 

 left, descending again to the level of the bed of the stream to the 

 south. The most northerly strata of the main anticlinal which are 

 actually visible occur at the angle of the stream some distance 

 beyond, where there is a boss of crumpled Lower Birkhill flaggy and 

 carbonaceous shales containing fragmentary examples of Monograptus 

 lobiferus (M'Coy) and M. gregarius. Similar beds, greatly disturbed, 

 but clearly associated with grey shales, succeed, and are irregularly 



