148 REPORTS ON THE STATE OF SCIENCE.—1913. 
morphosed sandstone, crushed felsite—limestone, probably Carboni- 
ferous—dark red granite, diorite, flints. 
Garvagh Quarries. Boulder-Clay and ‘Sands and Gravels.’ 
Erratics :—Numerous red and pink granites, grey granite, hornblendic 
lamprophyre (camptonite?), andesite, pebbly grits, quartz-porphyries, 
syenite (Slieve Gallion)—mica schist, metamorphosed grits, quartzite. 
Cookstown District, Gravel-Pits. Erratics:—-Numerous red and 
pink granites, grey granite, aplite vein, felsites, felsite porphyries, 
syenites, diorites, crushed fragmental rock, ophitic gabbro, quartz- 
hornblende-porphyry, pink pegmatite, quartz-porphyry, Slieve Gallion 
—dolerite—banded granite, gneiss, metamorphosed sandstones and 
grits, quartzite (Dalradian). 
Coalisland, Sand- and Gravel-Pits, fine current bedding. Erratics :— 
Syenite, grey, pink, and red granites, hornblendic granite, crushed 
felsite, felsite porphyries, quartz-porphyries, fine-grained gneiss, 
hypersthenite or pyroxenite, granite porphyries, lamprophyre, felsites, 
Slieve Gallion—gneiss—quartzite, reddened by hematite, red band of 
Slieve Gallion—andesite, Tyrone Devonian—flint. 
Sherrygroom Gravel-Pit, about five miles South of Cookstown. 
Erratics:—Crushed conglomeratic sandstone (Dalradian), epidiorite 
(Dalradian), syenites, felsite porphyry, granite (aplite in), lamprophyre, 
pink granites, hornblende schist, Slieve Gallion—granites, Barnes- 
more (?)—andesite, Tyrone Devonian—diorite, Slieve Gallion or 
Tyrone axis—gneiss-—flint, basalt, mica schist. 
‘ Blue Door’ or ‘ Finger’ Gravel-Pit, near Cookstown. Erratics :— 
Red granites, syenites, hornblendic granites, Slieve Gallion—chalk, 
flint, quartzite. 
Glasgow Hill, esker one mile north of Cookstown. Erratics :— 
Hornblendic granite, including pieces of diorite, coarse felsite porphyry, 
granite with inclusions of mica schist, hornblendic granites, syenite, 
diorites, porphyritic felsite, Slieve Gallion—granulitic gneiss, epidiorite, 
chalk flint breccia (local)—flints, basalts, chalk, quartz. 
Aghalee, Section of Sands and Gravels overlying basalt in a quarry 
south of the Aghalee Bridge over Lagan Canal. Erratics :— 
Riebeckite rock, Ailsa Craig—granites, hornblendic granites, diorites, 
syenite, aplitic granite, quartz-felsite (altered rhyolite), Slieve Gallion— 
fine-grained sandstone, rhyolite, clay ironstone, jasper, flint, chalk, 
mica schist, white quartz. 
Cullion Glen, North Slieve Gallion, Boulder-Clay overlying 
Carboniferous limestone. Erratics:—Carboniferous conglomerate— 
hematite and quartz, Red band Slieve Gallion—sheared felsite, Tyrone 
axis to West—andesites, quartz andesite, syenites, granites. hornblendic 
rock, diorites, camptonitic lamprophyre, local—chalk, flints, jasper, 
schist, red sandstone, quartz. 
Carmean, esker close to Railway Station, about two miles North of 
Moneymore. Sands and Gravels. Sands of a red colour, and 
numerous pink granites common throughout the section—jasper, 
hematite ore, fine grained sandstone—granites, syenites, hornblende 
eranite, diorite, Slieve Gallion—Carboniferous conglomerate, .sand- 
stone (probably Lower Carboniferous), crushed pegmatite. 
