BACTERIOLOGY. 185 



must be heated up to a very high degree before they 

 are destroyed. Spores are of the usual variety. The 

 action of the gastric juice kills them. They effect ani- 

 mals lower than man ; therefore, they are a disease for 

 the veterinary surgeon to study. The best method of 

 getting rid of the dead animal is to burn it or bury it 

 under a pile of slacked lime several inches deep. 



Examine the tap water for bacteria by making the 

 plate cultures in the usual way, as follows: Take the 

 gelatin and melt it and pour it into the Petri dish; 

 then take i c.c. of water from the hydrant and pour 

 it into the dish on the medium, and note results in a 

 few days. 



Plate the pus in the vessel, and examine the same 

 on the slide after staining. 



Make a stained preparation of the urine on the 

 table. 



Tell to what class the bacteria belong, i. e., if they 

 are cocci or bacilli. 



Some stain with blue and others with red. 

 Make a study of the bacillus of hog-plague. 

 Make the usual cover preparation; stain with fuch- 

 sin; make drawings of the same. 



Examine bacillus prodigiosus; note the color of the 

 colonies. 



