1 24 BACTERIOLOGY. 



The cocci are present in the pus of those cases 

 in which the wounds and pus-stained bandages 

 exhibit a green-blue or blue colouring. 



Micrococcus cholerae gallinarum (Bacterium 

 of Fowl-cholera . Microbe du cholera des poules\ Cocci 

 2 3 p, in diam., sometimes united in pairs, and 

 then presenting a figure of 8 appearance. In the 

 tissues they appear as rods 2 to 3 //, in length and 5 p, 

 in diam., with their extremities stained more deeply 

 than their middle^ (vide p. 130). When cultivated by 

 introducing a drop of the infected blood into sterile 

 chicken-broth, a number of round bodies, undergoing 

 rapid movement and as a rule united as diplococci 

 or elongated and contracted in the middle, appear 

 in the broth, which is at first slightly milky, but be- 

 comes limpid, and the microbes at the same time 

 pass into a finely granular state. From this, how- 

 ever, fresh cultures can still be started. Cultivated 

 in a test-tube of nutrient gelatine, after from three 

 days to a week there develops along the needle 

 track a fine, almost imperceptible, greyish thread 

 without liquefaction of the gelatine (Plate III., 

 Fig. 2). The growth is exceedingly scanty, even 

 after several weeks. 



Fowls suffering from the disease usually die very 

 rapidly. In the less acute cases they are somnolent, 

 weak in their legs, and their wings trail. They 

 suffer from diarrhoea, and pass into a state of sopor 

 and die. The micro-organisms are found in large 



Cornil and Babes, Les Bacteries. 1885. 



