APPENDIX. 
A. 
TERMINOLOGY OF MICROBES: VARIATIONS IN DENOMINATION 
AND CLASSIFICATION, 
In consequence of the polymorphism of microbes, the 
terminology employed by different authors is very unstable. 
We have given the established morphological classification 
which is still most generally used, but we must here add 
some remarks which will make it more easy to understand 
the works recently published on microbes, such as Les 
Bactéries, by Cornil and Babés, and Micro-organisms and 
Diseases, by Klein. 
We must first note the tendency to eliminate the names 
of two genera: Bacterium and Vibrio. 
Cornil and Babés give the name Bacteria, which is the 
title of their work, to the whole group of Bacteriacece, or 
microbes strictly so called, regarded as a distinct order. 
They have consequently been led to suppress the genus 
Bacterium, in order to avoid confusion; and most of the 
species formerly assigned to the genus Bacterium are 
regarded by them as Bacillus, whether the individual is 
long or short, mobile or stationary. In the description 
of the microbes of human diseases, we have conformed 
