Proc. Roy. Socy. of Edin. ] 
[Yol. XXX. 
Fig. 21. — Another view of the vegetation bordering the river, from a position 
close to that of fig. 20, showing the zone of Castalia speciosa, amongst which 
are a few stems of Equisetum limosum and Scirpus lacustris ; beyond this 
zone, Carex rostrata appears as in the preceding picture. 
Fig. 22. — A view looking into the zone of Carex rostrata which borders the 
river, as shown in the two preceding figures. 
Mb George West. [Plate 11. — Referred to on page 115. 
