140 Epwarp Hutit—TZhe Relations of the Carboniferous, Devonan, and Upper 
other streams descending from the mcuntains, and. the junction of the two forma- 
tions may be clearly determined along the road from Glengariff to Bantry ata 
distance of about a mile and a half from the Church. (Fig. 2.) The dip of both 
formations appears to be similar. 
Fig. 2.—Section along Road to Bantry, near Glengauriff. 
G, Glengarif’ Beds —-Purple rough slates and hard coarse green grits. C. Carboniferous Beds.-—Grey and olive-green thin-bedded 
grits and rough slates. 
I may here observe that although there must necessarily be some points of 
resemblance between two formations in juxtaposition, both consisting of alternating 
beds of grit and slate, both dipping at similarly (or approximately similarly) high 
angles, and both traversed by cleavage-planes, still the two groups have always 
certain points by which they may be distinguished. The Glengariff beds are 
generally massive, the prevalent colours are deep purple and sea-green, and the grits 
are coarse-grained. On the other hand, pale, greenish-grey, or olive-green colours 
prevail amongst the Coomhola beds, while the grits are thin-bedded and fine-grained. 
They also often contain marine fossils. 
County Cork Districr (a), Macroom.—To the south of the village there occurs a 
sharp synclinal trough in which lies the Carboniferous Limestone. (Fig.3.) On either 
side the purple grits and slates of the Glengariff series form the flanks of the valley, 
but the junction of the Carboniferous Limestone is obscured by marshy ground. It 
is uncertain whether the limestone is directly in contact with the grits or separated 
therefrom by Carboniferous Slate. If the latter be present, it is only represented 
by 100-150 feet of strata. Here then the whole Coomhola grit series, which is of 
such thickness a few miles further south, near Bantry, is absent—together with the 
Old Red Sandstone. The hiatus is nearly at its maximum in this locality. 
Fig. 3.—Section of Synclinal Axis south of Macroom, showing Carboniferous 
Limestone in close proximity to the Glengarifi Beds. 
Macroom. 
R. Lee 
L. Carboniferous Limestone. x x-—Spaces where the strata are notshown. G@.—Glengariff Beds, consisting of 
purple grits and slates-—beds flexured. 
(6.) In the neighbourhood of Coachford, Dripsey, and Blarney, the Carboniferous 
Slate, Coomhola grits, or Kiltorcan beds, are found respectively intervening between 
