Proc. Roy. Socy. of Edin. ] 
[Vol. XXX. 
Fig. 119. — Isle of May. View from near the same place as fig. 118, but looking 
in a westerly direction towards the higher portion of the island. The zone of 
rock that produces nothing hut lichens lies between this spot and high- 
water mark. In the foreground of the present view is seen the vanguard of 
the phanerogamic vegetation, dwarf tussocks of Armeria maritima having 
obtained a hold in the interstices of the lichen-covered rocks. 
Fig. 120. — Isle of May. Nearer view of the lichens mentioned under fig. 118. 
They are as follows Lecanora parella, Physcia parietina, F. aquila, and 
Ramalina scopulorum. 
Mr George West. [Plate 60 . — Referred to on page 175. 
