Proc. Roy. Socy. of Edin. ] 
[Vol. XXX. 
Fig. 87. — Black Loch, North Fife. A portion of the zone of Castalia speciosa and 
Nymphsea lutea which encircles the loch. The Nymphsea is in the foreground 
next to the shore, with its leaves flat on the surface of the water, and its flowers 
raised above the surface. The Castalia is beyond, and has its leaves partially 
above the surface, and its flowers on the surface of the water (compare figs. 
21, 31, and 61). 
Fig. 88. — Lochmill Loch, North Fife. View from near the effluent at the east 
end, looking west, showing in the foreground marsh vegetation, which is 
largely composed of Glyceria fluitans, and beyond this a wide zone of Poly- 
gonum amphibium mixed with Potamgeton natans, which extends along the 
north shore. Hills, with plantations, enclose the loch, excepting at the east end. 
Mr George West. [Plate 44 . — Referred to on page 149. 
