6 Journal of Travel and Natural History 



roughly map in from its summit, the general disposition of the 

 sedimentary and the trappean masses of the district around him. 



The tourist who enters Scotland by the eastern route, finds on 

 every side of him conspicuous illustrations of this feature. First, 

 come the Bass Rock and North Berwick Law, (see fig. 2) that 

 guard the entrance to the Forth. Journeying westwards, he passes 

 the group of the Garlton Hills, and after crossing the low grounds 

 of the Midlothian coalfield, finds himself among the basaltic crags 



Fig. 2. — View of Loch Levcii and the Lonioiuls of Fife, with Nortli-Herwick Law and Bass 

 Rock in the distance. — To illustrate the part played by Trap-rocks in the landscapes of 

 tlie Midland Valley. The upper part of Lomond Hill consists of .sheets of hard Trap- 

 rocks, lying upon soft Sandstone and .Shale. 



and hills of Edinburgh. Northwards lie the broken heights of 

 Fife ; and as he continues his way westwards, he skirts the chain of 

 the Pentlands, and the endless crags and knolls of Linlithgowshire. 

 The detached and prominent hills around Stirling arrest his notice, 

 and beyond them, the terraced "fells" of Campsie to the west, 

 with the green chain of the Ochils in front. He proceeds north- 

 ward by Perth, and there still he finds ro\igh masses of rock, 



