ON THE PLANT REMAINS IN THE SCOTTISH PEAT MOSSES. 359 



EXPLANATION OF FIGURES. 



Fig. 1. General view of one of the lateral valleys leading out of Osedale, W. Skye. The small flat- 

 topped basaltic hills are generally pasture-clad, whilst the intervening valleys are covered with Scirpus 

 ccespilosus, Calluna vulgaris, Eriophorum, etc. The peat varies in depth from 8 to 30 feet, and is described 

 on page 339. 



Fig. 2. General view of the Coire Bog district. Mounds of Rhacomitrium lanuginosum (shown in the 

 photograph) are numerous. The peat varies in depth from 6 to 18 feet, and is described on page 343. 



Fig. 3. Peat from the Salix Arbuscula layer, Coire Bog, Easter Ross. A block of peat split in half in 

 a horizontal direction, and the fresh surface photographed, page 344. 



Fig. 4. Pinus sylvestris. Base of trunk with roots projecting from a bank of peat. The trees here 

 rest upon a thin bed of Sphagnum, which in turn rests upon glacial deposits, — the older beds yielding the 

 remains of an Arctic flora found elsewhere in the district being absent in this spot. Coire Bog, Easter 

 Ross. Page 345. 



Fig. 5. Peat from the Salix Arbuscula layer. The block of peat has been split in half in a horizontal 

 direction and the willow stems photographed in situ. Spey-Findhorn watershed. Page 347. 



Fig. 6. Peat from the Empetrum layer. The upper part of the photograph shows Empetrum stems, 

 whilst the lower half shows Sphagnum lying immediately over the Empetrum layer. Spey-Findhorn 

 watershed. Page 347. 



Fig. 7. Pinus sylvestris layer. The side of a bank of peat has been cut back and two pine layers 

 exposed, separated by 3 feet of Sphagnum peat. Findhorn-Nairn watershed. Page 352. 



Fig. 8. Empetrum, Betula nana, and Salix Arbuscula layers projecting from the base of a bank of peat, 

 resting upon glacial deposits. Findhorn-Nairn watershed. Page 352. 



TRANS. ROY. SOC. EDIN., VOL. XLV. PART II. (NO. 13). 50 



