188 LABORATORY METHODS OF 



Study suppurative diseases, their causes and cure. 



Study the cause of gonorrhoea; the method of mak- 

 ing the spread for the discovery of the cocci. 



Study mixed infection. 



Make a cover spread of the pus on the table and 

 classify the germs in it. 



INFLUENZA. 



The disease Influenza is a widespread disease and 

 is more prevalent in winter than in any other time. 

 It is caused by the presence of a certain bacillus called 

 Bacillus Influenzae. They are short rods 1.5 microns in 

 length and .3 microns in breadth. The bacilli sometimes 

 occur in chains and sometimes in bunches. They lose 

 the stain by Gram's method. They are non-motile 

 and do not form spores. They are best stained with 

 carbol fuchsin. They grow best on blood agar and 

 can be grown best on the agar by smearing the me- 

 dium with the sputum of the patient. The lower an- 

 imals' blood is as good as that of the human subject. 

 The bacilli grow well at room temperature ; their opti- 

 mum temperature is that of the body. The power of 

 resistance of this organism is of a low order. The 

 mode of distribution of this bacillus is by direct con- 

 tact with the mucus and pus of the person affected 

 with influenza. The location in the body is unusally 



