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EPIDEMIOLOGICAL SOCIETY. 
SUGGESTIONS FOR OBSERVATIONS ON THE NATURAL 
INFLUENCE OF CHOLERA ON THE LOWER ANIMALS. 
By W. Lander Lindsay, M.D., Perth. 
Dr. Lindsay considers, that for the successful prosecution 
of the study of cholera as affecting the lower animals as well 
as man, two classes of observers are necessary ; for it seldom 
happens, nay it is scarcely probable, that the same mind is 
equally fitted on the one hand accurately to observe and labo- 
riously accumulate facts, and, on the other, to sift, arrange, 
and reason upon these, so as to deduce general principles. 
No; he who gathers in the harvest of facts into the store- 
houses of knowledge, is the type of one class of naturalists — 
the careful, plodding, unostentatious observer ; he may be 
said to be actuated by a spirit of acquisitiveness; while he 
who subjects the grain thus accumulated to the machinery of 
mental and scientific analysis, who separates the wheat from 
the chaff, who, from a chaos of apparently unconnected data, 
evolves harmonious laws, and exhibits their natural relations 
and significations, is the type of an opposite class, whose 
labours are guided by the spirit of inductive philosophy. 
Dr. Lindsay said, that from observations and experiments 
made in various parts of Central Europe, and, to a less extent, 
in India and Britain, it would appear, that coincident in date 
with cholera epidemics in man, there have frequently ap- 
peared cholera epizootics among the inferior animals, espe- 
cially among the domesticated animals ; that this cholera in 
animals resembles that of man, in its symptomatology and 
pathology ; and that it is communicable not only between 
different individuals, but between different species and genera, 
an 1 also to and from man. The Faculty of Medicine at Vienna 
reported, after the cholera epidemv of 1832, that while in 
Lower Austria, Gallicia, Moravia, and Bohemia, no animals 
were exempt from the influence of that epidemic, the disease 
most closely resembled the human cholera in animals having 
similar structure and habits to man, such as the dog. The 
chief animals in which cholera has been noted to have oc- 
curred in Europe are horses, cattle, dogs, cats, and poultry — 
or, in other words, the domesticated animals — while in India 
and other foreign countries, in addition, racoons, camels, 
zebras, and monkeys have been mentioned. Some facts that 
have been recorded would lead to the inference, that the 
