The position of Casembe's town, and of a point near Pambette at the S.E., and of Lake Liemba (Tanganyika), have been computed and corrected by Sir T.Maclear and Dr.Mann.

The observations for latitude were taken at short intervals, and where it has been possible to test them they have been found very correct, but I repeat that until the imprimatur of his old friend at the Cape of Good Hope stands over the whole of Livingstone's work, the map must be accepted as open to further corrections.
The journey from Kabwabwata to Mparru has been inserted _entirely_ from notes, as the traveller was too ill to mark the route: this is the only instance in all his wanderings where he failed to give some indication on his map of the nature of the ground over which he passed.

The journey front Mikindany Bay to Lake Nyassa has also been laid down from his journal and latitudes in consequence of the section of this part of his route (which he left at Ujiji) not having arrived in England at this date.[2] It will be observed that the outline of Lake Nyassa differs from that on any published map: it has been drawn from the original exploratory survey of its southern shores made by Dr.Livingstone in 1861-3.

For some reason this original plan was not adhered to by a former draughtsman, but the Lake has here been restored to a more accurate bearing and position.
How often shall we see in the pages of this concluding chapter of his life, that unwavering determination which was pre-eminently the great characteristic of David Livingstone! Naturally endowed with unusual endurance, able to concentrate faculties of no ordinary kind upon whatever he took in hand, and with a dread of exaggeration which at times almost militated against the importance of some of his greatest discoveries, it may be doubted if ever Geographer went forth strengthened with so much true power.

Let us add to these a sincere trust that slavery, the "great open sore of the world," as he called it, might under God's good guidance receive healing at his hands; a fervent hope that others would follow him after he had removed those difficulties which are comprised in a profound ignorance of the physical features of a new country, and we have the marching orders of him who left us in August 1865 never to return alive.
Privileged to enjoy his near personal friendship for a considerable period in Africa, and also at home, it has been easy to trace--more especially from correspondence with him of late years--that Livingstone wanted just some such gigantic problem as that which he attacked at the last to measure his strength against: that he finally overrated and overtaxed it I think all must admit.
He had not sufficiently allowed for an old wound which his constitution received whilst battling with dysentery and fever, on his celebrated journey across Africa, and this finally sapped his vital powers, and, through the irritation of exhaustion, insidiously clouded much of his happiness.
Many of his old friends were filled with anxiety when they found that he intended to continue the investigation of the Nile sources, for the letters sent home by Mr.Stanley raised the liveliest apprehensions, which, alas! soon proved themselves well grounded.
The reader must be warned that, however versed in books of African travel he may be, the very novelty of his situation amongst these pages will render him liable perhaps to a danger which a timely word may avert.