344 THE 200L0GIST. 



falls about 15 metres from an elevation of about 120 metres at 

 the former place, and describes two major curves bordering 

 extensive alluvial plains. The beds of shingle are fairly large, 

 and composed of a light grey, water-worn stone of moderate 

 size. The Strath is well farmed and populous. The river side 

 is easy of access to the public. The resident stock has been 

 much harassed and rarely succeeds in breeding on the shingle. 

 The birds have taken to nesting away from the river on naked 

 moraines, other collections of stones, and, in at least one 

 instance, on the ballast of the railway track.* All the breeding 

 territories and local feeding-grounds lie below the 152 metres 

 contour line. 



B. The River Tummel. Between Faskally and Ballinluig 

 the Tummel is a pool, rapids river of considerable size. Above 

 Pitlochry it flows through a narrow glen, ending in a rocky 

 gorge. At Faskally there are broad river terraces, fringed by a 

 bank of shingle, composed of light grey stones of moderate size, 

 and rising at least one metre above summer water-level. The 

 Faskally terraces show two main levels, an upper and a lower, and 

 are in pasture. At Clunie there is a crescentic band of shingle 

 backed by a steep wooded slope. From Pitlochry to Ballinluig 

 the gradient is gentle (about 1 in 400), and the river has formed 

 " a large flat of alluvium." The plain has been cut by the 

 river into cones. These are fringed with light grey shingle, 

 which spreads out into larger areas, or banks below the cones, 

 the size of the areas increasing from above downwards, and 

 culminating in the relatively vast area of shingle running along- 

 side Logierait Wood, on the right bank of the river. The cones 

 are entirely in pasture, or the basal portions are cultivated. 

 The hill slopes on the left bank, being covered largely with 

 boulder clay and having a south-western exposure, are mainly 

 under cultivation. The slopes on the right bank are little 

 farmed, being mostly in natural grass, or, as in the lower 

 reaches, densely planted with wood. 



Nine stations in all were recognized and kept under observa- 

 tion between Faskally and Ballinluig. They have not, however, 

 an equal value for population, the numbers varying from one 



* This happened above Blair* 



