Fixed nitrogen is cheap enough and abundant enough to justify its use as an aid toward a more prosperous agriculture. Since, as has already been noted, there is practically no limit to the quantity of fixed nitrogen that may be produced for agricultural uses, we should very seriously consider national and international inquiries in the domain of soil and plant science as a first step toward building more rational crop production programs.

Previous Information. There was very little previous information to use as a basis for work on Lakes Edward and George, but fortunately the region had been mapped in some detail by the Uganda-Congo Boundary Commission of 1906-08. This map served as a satisfactory foundation, but the western Congo shoreline of Lake Edward was inserted only by a dotted line, and a number of inaccuracies, particularly with regard to the islands and littoral of L. George, came to light during our survey. Furthermore. The shorelines of all the African lakes are undergoing rapid changes, particularly in those parts where the littorals are flat and sandy and where wind and wave action cause the growth of sand spits and bars. By these means considerable changes have taken place along the low-lying south-east shore of Lake Edward during the period from 1908-31). With regard to depths, practically nothing was known beyond the fact that a rough line of soundings down the Kazinga Channel, recently made by the Kenya and Uganda railway, had shown that there is sufficient, water for steamer navigation along this route. It was generally supposed that both Lakes Edward and George were very shallow. The fauna and flora had not been studied in any detail, though some fishes, etc., had been collected by Professor Moore and other naturalists who passed these lakes en route for other parts, and shore shells had been collected by Capt. Pitman. The expedition, therefore, was left a practically open field for geographical and biological work.

There was very little previous information to use as a basis for work on Lakes Edward and George, but fortunately the region had been mapped in some detail by the Uganda-Congo Boundary Commission of 1906-08. This map served as a satisfactory foundation, but the western Congo shoreline of Lake Edward was inserted only by a dotted line, and a number of inaccuracies, particularly with regard to the islands and littoral of L. George, came to light during our survey. | Published on behalf of the Government of Uganda Protectorate