472 MR. G. ERDTMAN: STUDIES IN THE 
The latter is a deposit 40 em. above mean high-water level, immediately 
south of the mouth of the River Laxdale. It is covered by a saline meadow 
showing Armeria, Festuca rubra, Glauz, Juncus Gerardi, and Plantago 
maritima, 
The thickness of the peat is, in 12a, 146 cm., in 126, 110 em. Ata 
depth of 112 to 114 em. below the surface in the former, and 67 to 68 em, 
in the latter, there runs a continuous layer of sand. The peat immediately 
above and below this layer contains numerous small sand-grains, which make 
the analyses very troublesome. In a sample from 114, 95 em. below the 
surface, there were counted: 1 Alnus pollen-grain, 2 Betula, 2 Pinus, 
l Quereus ; and in a sample 125 em. below the surface, 10 Betula, 5 Pinus, 
and 3 Corylus pollen-grains. A sample from 114, above the sand-strip 
(47 em. below the surface), showed: Alnus 16 per cent., Betula 69 per cent., 
Pinus 2 per cent. Quercus 13 per cent.: Corylus T per cent, [also pollen of 
Myriophyllum alteruiflorum (sporadic) and a Chenopodiac 2] : and a sample 
from below the strip, 80 em. below the surface : Alnus 16 per cent., Betula 
68 per cent., Pinus 4 per cent. Ulmus 12 per cent., and Corylus 16 per 
cent. In both deposits the pine and hazel percentage are greatest in the 
lowest samples, which gives a hint that they are approximately of the age of 
the A-zone. Probably the sand-layer in the one moss is synchronous with 
that in the other. 
Prar Moss No. 13. 
Situated north of Stornoway at the S.W. point of a little tarn, the water 
of which flows north-east to Allt an-t Sniomh and thence to Broad Bay 
(Loch a Tuath). The level of the pool is about 65 em. lower than the point 
where the boring was made. 
Sequence :— 
A. 100 em.  Sphagnum peat mixed with Seirpus and Calluna remains ; 
H=6-7. 
B. 100 em. Do., almost typical; H=4. 
C. 140 em. Do., H 76 ; black below, containing small twigs. 
A sample taken 5 em. above the basal sand showed : Alnus 2 per cent., 
Betula 8525 per cent., Pinus 9 per cent., Quercus 075 per cent. ; Corylus 
18 per cent. ; cf. Saliw 10 per cent. 
Peat Moss No. 14. 
Situated 75 m. east-north-east of No. 13. A boring was made on the 
margin of a little loch, and showed a sequence, 130 cm. thick, resting on 
rock. A sample 3 cm. above the ground contained: Alnus 12 per cent., 
Betula 59 per cent., Pinus 32 per cent., Quercus 3 per cent. ; Corylus 9 per 
cent. Because of the greater alder- and oak-pollen frequency and the 
smaller frequency of hazel-pollen, this sample scems to be a little younger 
than that from moss No. 13. 
North of Stornoway much peat is eut for fuel. Although in places the 
peat in the Isle of Lewis is wasting, places are also to be found where plants 
