II. 



STRUCTURE OF THE BACTERIAL CELL. 



The cell- wall possibly composed of cellulose or woody- 

 fibre 



Difficultly seen its demonstration by icdine. 



Capsulated bacteria. 

 ZoOgloea the result of fusion of the cell-walls of 



many bacteria. 



The cell contents protoplasm existence of a nucleus. 

 Homogeneous granular. 

 As a rule the cell is colorless. A few are slightly 



colored. 

 Chlorophyll, the green coloring matter of plants, 



is present in a siunll number. 

 The granulose reaction given by some blue 

 color with iodine, same as with boiled starch. 

 Motion Brownian, or molecular movement. Real 

 motion. 



Actual motion observed in many bacilli, in spi- 

 rilla and in two micrococci. 

 Whips or flagella. Their arrangement on the 



bacillus, spirillum, vibrios, micrococciis. 

 Giant whip-. 

 Demonstration of, 



Action of iodine on protoplasm, 



Capsules, 



Whips. 



PREPARATION OF POTATO CULTURES. 



Select three sound potatoes and then clean them 

 thoroughly, under the tap, with the aid of a brush. By 

 means of a knife remove any bad spots or depressions that 



