MICROBES, OR BACTERIA. 101 
but differing from the latter in its undivided filaments. 
Its diameter is at the most one micro-millimetre : it 
varies in length, and is flexible, in which it resembles 
the genus Vibrio. These filaments collect in a 
mucous deposit at the bottom of the cask (Fig. 54). 
Wine undergoes successive changes under the in- 
fluence of this pathogenic ferment, and this has led 
Fig. 54.—Wines affected by pousse. Deposit seen under the microscope: 1, ordinary 
alcoholic wine-ferment ; 2, acicular crystals of potassium bitartrate; 3, crystals 
of normal calcium tartrate ; 4, Vibrio, or microbe which produces the disease. 
to the belief that there are several distinct diseases ; 
hence the different names which have been given to 
this affection. 
The remedies for the disease consist in the ad- 
dition of tartaric acid; in drawing off the wine into 
sulphured casks, and adding a little brandy; and in 
taking care to keep the cellars whitewashed and airy. 
