The Doctor's custom was always to have metallic note-books in use, in
which the day's jottings were recorded. When time and opportunity
served, the larger volume was posted up with scrupulous care.

It seems, however, that in the last three or four years of his life
this excellent rule had to give way to the toils of travel and the
exhaustion of most distressing illnesses. Whilst in the Manyuema
country he ran out of note-books, ink, and pencils, and had to resort
to shifts which at first made it a very debateable point whether the
most diligent attempt at deciphering would suceeed after all. Such
pocket-books as remained at this period of his travels were utilized
to the last inch of paper. In some of them we find lunar observations,
the names of rivers, and the heights of hills advancing towards the
middle from one end, whilst from the other the itinerary grows day by
day, interspersed with map routes of the march, botanical notes, and
carefully made drawings. But in the mean time the middle portion of
the book was filling up with calculations, private memoranda, words
intended for vocabularies, and extracts from books, whilst here and
there the stain of a pressed flower causes indistinctness; yet the
thread of the narrative runs throughout. Noting but his invariable
habit of constantly repeating the month and year obviates hopeless
confusion. Nor is this all; for pocket-books gave out at last, and old
newspapers, yellow with African damp, were sewn together, and his
notes were written across the type with a substitute for ink made from
the juice of a tree. To Miss Livingstone and to the Rev. C.A. Alington
I am very much indebted for help in the laborious task of deciphering
this portion of the Doctor's journals. Their knowledge of his
handwriting, their perseverance, coupled with good eyes and a strong
magnifying-glass, at last made their task a complete success.