xiii INTRODUCTION. 
any complaint till the $d October, when the ship was aft 
sea; he then expressed a sense of lassitude about his loins, 
and irritability: of stomach ; but there was no apparent fe- 
brile action ; the pulse being about the natural standard, 
which with him was only 65°, without the body undergo- 
ing any encrease of temperature. The only symptoms 
were irritability of stomach, with extreme langour and de- 
bility; thenext day however, he was seized with vomiting ; 
on the 6th, became insensible, the pulse scarcely percep- 
tible at the wrist, and the extremities cold; and he conti- 
nued thus till 11 0’clock in the evening, when he expired 
without a struggle. 
Mr. Eyre, the Purser, wasa young man of a corpulent 
and bloated habit. He had no illness, while in the river ; 
had not been on shore for three weeks, and had taken very 
little exercise during the voyage. In the night of the 27th 
September, when on the passage to Cabenda, he was at- 
tacked with febrile rigors, severe pain in the head, back 
and extremities, with general lassitude, prostration and de- 
pression of spirits, and on the third day he breathed his 
last. Before death a yellow suffusion had taken. place, 
with vomiting of matter, resembling coffee grounds ; this 
symptom of extravesated blood into the stomach, which oc- 
cured in many ofthe cases,would seem to confirm the idea 
of the disease being the same as that of the Bulam fever. 
Mr. Firzmaurice, the Master and Surveyor, and Mr. 
Hopper, Master’s Mate and Midshipman, entirely es- 
caped the fever, excepting a slight attack, experienced by 
the former, in consequence of a fatiguing march across 
