414 
Notes on Portrait-plates 
on his appointment to the post of Assistant-Professor of Pathology at the 
Army Medical School, Netley. Lewis held this position until his unexpected 
and untimely death on May 7, 1886. He died from pneumonia at his house 
at Woolston, Southampton, after only a few days' illness; and from entries 
in his note-books it was inferred that his death was caused by his accidentally 
inoculating himself with micro-organisms in the performance of some experi¬ 
ments. 
Most of Lewis’s work was published in the form of “Appendixes” to the 
Annual Reports of the Sanitary Commissioner with the Government of India 
(Calcutta, 1869-1881). Some of these papers were subsequently issued 
separately (sometimes with additions and corrections), and after his death his 
chief works were carefully reprinted in a memorial volume by his friends 
(Physiological and Pathological Researches , arranged and edited by W. Aitkin, 
G. E. Dobson, and A. E. Brown, 4°, London, 1888). Some of Lewis’s reports 
were also printed, more or less completely, in contemporary volumes of the 
Quarterly Journal of Microscopical Science. The manner of their publication 
has doubtless been partly responsible for the unmerited neglect which these 
classical memoirs have suffered in recent years. Their contents—in so far as 
they are of parasitological interest—may now be briefly indicated. 
The first report 1 describes “The microscopic objects found in cholera 
evacuations, etc.” (1870), and contains the first authentic account of amoebae 
from the human intestine. In 1872 and 1874 appeared two important supple¬ 
mentary memoirs (jointly with D. D. Cunningham) recording “Microscopical 
and physiological researches into the nature of the agent or agents producing 
cholera.” In 1872 we also find—by Lewis alone—researches on “The bladder- 
worms found in beef and pork,” and the famous paper “ On a haematozoon 
inhabiting human blood: its relation to ehyluria,” containing the first account 
of “ Filaria sanguinis hominis ”—Lewis’s name for the worms now known as 
F. hancrofti (i.e., microfilariae). Hardly less important is the next contribution, 
on “The pathological significance of nematode haematozoa” (1874), containing 
a description of filariasis in dogs and discussing the relation of the filarial 
parasites to ehyluria and elephantiasis in man. With Cunningham he then 
(1875) exhaustively investigated “The soil in relation to disease,' 1 and inquired 
into “The fungus-disease of India” (i.e., Madura Foot, etc.). In the following 
year (1876) the same workers studied and described “The Oriental Sore as 
observed in India”—though without discovering the specific parasites 
(Leishmania) ; and in the next year treated of “Leprosy in India” (1877). 
This was followed by the celebrated memoir—by Lewis alone—on “The 
microscopic organisms found in the blood of man and animals, and their 
relation to disease” (1878), which contains important contributions to bacteri¬ 
ology, protozoology, and helminthology—especially noteworthy being an 
1 The dates here given are those of actual publication. The Reports are for the preceding year 
in every case. For example, the paper here cited as 1870 will be found in the Sanitary Commis¬ 
sioner’s Report for 1869: and so on. The difference in dates has led to some confusion. 
