In the former portion of this paper, the Tipper or south-eastern boundary of the Skiddaw Slates, in their main area, had been traced from Troutbeck, on the N.E., as far as the head of Buttermere, onthe S.W. From this point (i.e. the north-western end of Honister Crag), the Skiddaw Slates can be traced for a very short distance across Warnscales Bottom. They are still overlaid by the felspathic trap and succeeding band of slates and breccias, which together compose Fleetwith Pike and the S.E. end of Honister Crag, and the relations between the two formations are the same as in the Gatescarth Valley. When however the pass of Scarf Gap on the south-west of Warnscales is reached, the Skiddaw Slates have disappeared and the base of the Green Slate Series now rests upon a great mass ofiatrusive felstone-porphyry (here almost a true syenite) which forms High Crag and High Stile. Though the Skiddaw Slates are absent here, it is interesting to observe that the stratification of the Green Slate Series can be particularly well made out in this region. The rugged hills to the S.E. of Scarf Gap are occupied by a prolongation of the great slaty band of Honister, but the beds have now to a great extent lost their former character, and have assumed very much the mineral aspect of trap, from which however they are easily distinguished by the fact that the bedding, in spite of a rough but well marked cleavage, is unusually distinct. The strata displayed in a number of magnificently moutonné'd crags and bosses, in which they are seen to undulate repeatedly, forming a series of small but well-preserved anticlinals and synclinals, the dips of which are N.N.W. and S.S.E. at angles of from 25° to 35°. The inclination therefore of these beds is only about half as high as that of the Skiddaw Slates in the Gatescarth Valley.