260 
PROF. DIECKERHOFF. 
question. This point has not yet been reached, and until it has 
been realized by our zealous experimentalists, we must continue to 
depend upon the process of clinical observations for additions to 
our intelligence. 
Prof. Dieekerhoff says : “ influenza ” ought not to be used to 
designate one single disease of the horse, because its signification 
would then be too limited, and its restriction alone would convict 
many practitioners of error, who to-day are in the habit of giving 
that name to a series of infectious diseases. Friedberger and 
Siedamgrotski propose to designate under the name of influenza, 
the pferdestaupe (benign typhoid fever.) Friedberger again, 
calls “ influenza pneumonia ”—the pferdestaupe complicated with 
pneumonia; an excessively rare occurrence; while Lustig re¬ 
serves the same names (influenza-pneumonia) to a form of brus- 
tseuche, (typhoid fever complicated with serious diseases of the 
chest.) 
These vague expressions give rise to the greatest confusion 
and should be utterly abolished, together witli another proposi¬ 
tion of Dieekerhoff, who in past days proposed to reserve the 
word influenza for all infectious diseases of the horse, adding for 
each variety the proper specific and distinguishing term. In the 
general interest of science, in order to conciliate the opinions of 
all, it becomes necessary to distinguish these affections, in the 
study of the causes and symptoms special to each. The word in¬ 
fluenza will therefore be considered merely in a sense historical 
and general, and will apply to all the infections diseases of the 
horse. Each one, however, will receive a special name. And, 
moreover, we shall never apply the term to affections of the 
epizootic and enzootic character. 
CROUPAL OR FIBRINOUS PNEUMONIA OF THE HORSE, 
COMPARED TO BRUSTSEUCHE. 
Typhoid fever complicated with severe pneumonia .—In the 
group of diseases called influenza,” must first be classed two 
principal ones, pferdestaupe and brustseuche, whose course and 
differential symptoms are at the present time quite well known. 
If some practitioners do not agree upon the diagnosis of these 
two affections, it must be remembered that in medicine even the 
