186 GEOLOGY OF ARRAN. 



to these upper drift beds. The young observer could not 

 employ a day given to geology to more purpose than in 

 examining these upper drifts and contrasting them with the 

 boulder-clay, in some typical section. 



The shell-bed No. 2 is seen over the boulder-clay, from 

 the extreme southern end of the section at the steep bank 

 over the stream, across the whole front of the section, 

 ascending, however, northwards; and the same species are 

 got in it throughout, there being a great many fragments of 

 Pecten Islandicus, Cyprina Islandica, Hodiola modiolus, 

 Astarte borealis, A. compressa, A. elliptica, and occasionally 

 single perfect valvea The part of the bed most accessible 

 for working is on a slip towards the southern part of the 

 section. 



A little way up the stream, on the same side, there is a 

 very high bank with apparently a like succession of beds, 

 but so steep that it is very difficult to get a footing ; and, as 

 the day was now far spent, we were obliged to leave them 

 unexamined. 



87. On the west or right bank of Torlin "Water, opposite 

 Kilmorie Church, and a little below the wooden foot-way, 

 the shell-bed is again seen. The sandstone strata here 

 dip N.E., opposite to the usual direction; the stream for 

 a short distance runs upon a whin dike, and there are 

 beds of trap farther down on the opposite bank. The 

 shell-bed rests on the sandstone, thinning out southwards in 

 the bank. The section has a small horizontal extent, the 

 bank northwards being broken and covered with wild 

 shrubs; but there are indications of the existence of the 

 boulder-clay in this direction, and it probably comes on here 

 tinder the shell-bed as the ground rises up the river. Over 

 the shell-bed there is a red sandy bed twelve to fifteen inches 

 thick, over which there is an upper drift of earth and stones. 

 The shell-bed has the same character as in Cloinid burn ; 

 it is tough and compact, dark coloured, with small stones, 

 and the same species of shells. Not having previously 



