1888 - 89 .] Dr R. W. Felkin on Tropical Diseases. 
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15. Filaria Sanguinis Hominis ; 16. Scurvy; 17. Tropical Abscess 
of the Liver. 
In a future paper I hope to continue the subject with a more 
extended range of diseases, which, although to a certain extent 
met with in the tropics, are also to be found in the temperate 
zones. 
I. Malarial Diseases. 
(See Plate I.) 
It has been hitherto the custom to subdivide the diseases due to 
malaria, or, in other words, to the malarial process, but I am so 
convinced that the same cause produces the various types or 
manifestations of malaria that I include them all under one 
heading. 
Malaria ( Ital .) — 8 ynon. — Marsh Miasm.; Fr. Mauvais air ; 
Intoxication des Marais ; Intoxication telurique ; Ger. Malaria. 
Definition. — An earth-born poison, generated in soil, the energies 
of which are not expended in the growth and sustenance of healthy 
vegetation. Ey almost universal consent, this poison is regarded 
as the cause of all the types of intermittent and remittent fevers 
commonly called malarial, and of the degeneration of the blood 
and tissues from long residence in places where this poison is 
generated. 
Malaria therefore includes — 
A. Intermittent Fever — Synon. — Ague; Fr. Fievre Intermittente; 
Ger. Kaltes Fieber. 
Definition. — A fever of malarial origin, characterised by a 
sudden rise of temperature during the paroxysm, by an equally 
sudden fall at its termination, and by the regularity of the times 
of accession and apyrexia. 
B. Remittent Fever — Synon. — Bilious Remittent ; Marsh 
Remittent, The Jungle Fever of the East Indies ; The African, 
Bengal, Mediterranean, Persian, or Walchern Fever; Fr. Fievre 
Remittente ; Ger. Bosartiges endemisches Fieber. 
Definition. — A paroxysmal fever of malarial origin, in which the 
paroxysms do not intermit, but only, as the name implies, remit. 
C. Pernicious Malarial Fever including — (a) Febris Algida; (b) 
Febris Comatosa. 
