xlvi INTRODUCTION. 
yellowish or brown, and in the last stage covered with a 
black crust; in some cases the face was flushed, though 
frequently pale, and the features rather shrunk. ‘The skin 
in some cases dry and pungent, with a hard and frequent 
pulse ; in others the pulse below the natural standard, with 
a clammy perspiration on the surface. In several a yellow 
suffusion took place from the third to the sixth or seventh 
day, in one case livid blotches appeared on the wrists and 
ankles. ‘The delirium was most commonly of the low 
kind, with great aversion from medicine. Singultus, a 
common and distressing symptom. The fatal termination 
in some, happened as early as the third or fourth, but in 
others, was protracted even to the twentieth day. With 
regard to the treatment, I shall here only observe, that 
bleeding was particularly unsuccessful. Cathartics were 
of the greatest utility ; and calomel, so administered as 
speedily to mduce copious salivation, generally procured 
a remission of all the violent symptoms; when I found it 
immediately necessary to give bark and wine.” 
From the accounts of the missions to Congo by Carli, 
Merolla, and others, it would appear, that bleeding copi- 
ously is the common remedy practised by the negroes, in 
the fevers of the country which are brought on by fatigue, 
and exposure to the weather. Carli mentions his having 
been bled no less than ninety seven-times, besides frequent 
and copious discharges of blood from the nose ; and from 
the loss of such enormous quantities, he suffers himself to 
be persuaded, that all the water he drank was turned into 
blood. Of the fourteen missionaries, who proceeded’ to 
the court of Zingha, Queen of Matamba, every one was 
seized with the fever, in consequence of the fatigue of 
