Its usefulness, however, will not, it is believed, be confined to the class of busy readers above indicated. Those who read for themselves the numerous books of African travel, can only by the closest attention to the text and persistent study of the maps understand what relation the work of each explorer bears to that of the others. To the difficulty, in it self great, of carrying many details in the mind, is to be added that which comes from the diversity of nomenclature on the part of the various writers. Scarcely any two of them give the same name to any comparatively obscure place, and when they do, are very likely to spell it in a different way. The Londa country, for instance, of Livingstone's first book, is the same as the Cazembe of his second, while Magyar, who was the first to explore it, writes of it as the Moluwa kingdom. The Uganda and Karagwe, which Burton describes on hearsay evi dence in his book, are by no means the Uganda and Karagwe of Speke. And the Bari tribeof Speke becomes the Barre nation in Baker's last book. Such diversities as these are innumera ble; and if the present work did no more than remove them, it would relieve the study of African exploration of a most fruitful source of confusion.
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