eferred to
were composed of resin of jalap, calomel, rhubarb, and quinine. It was
usually observed that active employment kept off fever, and that on high
lands its attacks were much less violent. Where the stomach refused the
remedies a blister was usually the most effectual means of stopping
the sickness.

Experience did not confirm the prophylactic action of quinine; exemption
from attack in unfavorable situations was rather ascribed to active
exercise, good diet, and to absence of damp, exposure to sun, and
excessive exertion. Even while navigating an unhealthy part of the
Shire, and while, owing to the state of the vessel, the beds were
constantly damp, good health was enjoyed, owing to the regular exercise
and good fare.

In the upper regions of the Shire, Dr. Livingstone says he and his
companions were exposed in the early hours of the morning to the dew
from the long grass, marching during the day over rough country under
the tropical sun, and then sleeping in the open air; but though they had
discontinued the daily use of quinine they Were perfectly well, as were
also their native attendants. This was one of the considerations that
gave him such confidence in the healthiness of the Shire highlands.

Two or three years later, in writing to a friend, Dr. Livingstone
thanked him for having sent him a missionary journal, which he greatly
enjoyed--_The News of the Churches and Journal of Missions_. To show the
very unusual pleasure which this Journal gave him, he proposed to send a
communication to the editor, but said he was somewhat afraid to do so,
lest it should meet the fate of many a paper forwarded to editors at an
earlier period of his life. Mustering courage, he did send a letter, and
we find it in the number of the journal for August, 1862. It is
entitled, "A Note that may be useful to Missionaries in Africa," and
consists of a statement of the remedy for fever, and an account of its
operation. He had been led to think of this from seeing in the _News of
the Churches_ for February, 1861, a reference to his remedy in an
account of the death of the Helmores. The proportions of the several
ingredients are given--"for a full-grown man six or eight grains of
resin of jalap, and the same amount of rhubarb, with four grains of
calomel, and four of quinine, made into pills with spirit of cardamoms.
On taking effect, quinine (not the unbleached kind), in four grains or
larger doses is given every two hours or so