In addition to the maps showing the depths of the 
lochs, the following maps are included in Vol. III. : — 
Plate I. Head-waters of the Forth — Orography and drainage areas. 
Plate II. „ „ , „ — Surface geology. 
Plate III. „ ,, „ — Mean annual rainfall. 
Plate XIV. Temperature Section of Loch Ericht. 
Plate XXXIV. Head-waters of the Tay — Surface geology. 
Plate XLH. Assynt District — Surfape geology. 
Plate LI. Loch Maree District — Surface geology. 
