90 



ESSENTIALS OF BACTERIOLOGY. 



the microscope a thick curled-up centre around which threads 

 are wound in all directions. And these fine lines show the 

 bacilli in profusion. 



FIG. 48. 



S tf\ r~ 



,$\v^ 



$\ 



Klatsch preparation. 



Potato. It can be cultivated on slices of potato which are 

 placed in air-tight test-tubes. 



Bouillon. Bouillon containing four per cent, glycerine is a 

 very good nurture ground. 



Varieties. Dixon, of Philadelphia, has obtained branched 

 forms of bacilli which he believes to be degenerated weakened 

 ones. 



In Sputum. Little granules arranged like streptococci, which 



