Proc. Roy. Socy. of Edin. ] 
[Vol. XXX. 
Fig. 79. — Site of a pool on thejsands of Luce^dry because of drought. The bottom 
is now covered with a sward composed of Hydrocotyle vulgaris, Peplis Portula, 
and Carex arenaria. On the border of the pool great tussocks of Juncus effusus 
are in close proximity to Ammophila arundinacea, which overgrows the sand 
hill in the rear. 
Fig. 80. — Yiew of the sands of Luce bordering the sea, looking along the sandy 
shore towards Glenluce. The dunes are everywhere capped with Ammophila 
arundinacea ; and at their base, quantities of dead Algse are partially engulfed 
in the sand. 
Mr George West. 
[Plate 40 . — Referred to on page 147. 
