222 Proceedings of the Royal Physical Society. 



is not of tlie steejD wall-like character near Harvieston. The 

 lower beds of the carboniferous system begin to rest on the 

 hills, giving a shelving character different from the abrupt 

 scarps of the porphyrites. The surface beds are first the 

 alluvial soil, then a thick stratum of gravel and boulders. In 

 the valley of the Devon there are a succession of beds of 

 clay, boulders, sand, and gravel extending to a considerable 

 thickness. 



Mr Cram thus refers to the figures on the plan : 



" Figures I. and II. are excavations made b}^ the burn in its 

 banks. Along the greater part of I. a high mound of earth 

 had been thrown up as a defence and covering for the pipes 

 conveying the water to the town. The embankment and 

 pipes were alike carried off, and the earth scooped out to a 

 considerable depth. 



" III. and IV. are large deposits of shingle and boulders. 

 The ground was formerly covered with sward, and partially 

 grown with wild rose-bushes. These have been buried by a 

 deposit of varying depth, in some places as much as four feet. 

 This long bank of conglomerate has since been removed. 

 The boulders had evidently been taken by the flood waters 

 from the boulder clay. Some were porphyrites found on the 

 Ochils, but most were boulders of quartz, chlorite, slate, and 

 other travelled stones. Many were of great size. One was 

 at least three tons in weight. 



" At V. and VI. the stream has carried off parts of its banks, 

 but not to any considerable depth. The 'Dam' set down 

 here has now been removed, and exactly in its place stood a 

 bridge in connection with the Glen footpath. The bridge was 

 borne away by the torrent as were several others farther 

 up. 



"VII. indicates the place where you will remember an 

 inroad has been made into a potato field. The water-course 

 as indicated in the map has now lieen filled up with gravel, 

 represented by dots, and the water finds its way by a course 

 in that part indicated in the map as a field. 



''At VIII. the footpath has been carried away, as well as 

 the garden wall, but the damage was kept at a minimum by 

 roots of trees. 



