Bacteria 1 



A. Classification: 

 Division I. Thallophyta. 



Subdivision B. Fungi. 

 Class II. Schizomycetes. 

 Order. Bacteriales. 

 Family. Bacteriaceae. 

 Genus. Bacillus. 



Species (e.g.). subtilis (Ehrenb.) Cohn. 



B. Habitat: 



Bacteria are found almost everywhere except, possibly, 

 far out at sea and upon the tops of lofty mountains. A 

 very good source from which to take material for this 

 exercise is the jar in which Saprolegnia was grown. If 

 this is not now available use stagnant water from any 

 source, or pickings from your teeth, using for this pur- 

 pose a new toothpick. 



C. Microscopic Characters: 



1. Clean cover-glasses thoroughly and pass them 

 through the flame of an alcohol lamp several times, 

 taking care not to break them. If a hanging drop 

 preparation is not available a fairly satisfactory 

 substitute may be made by cementing to a clean 

 glass slide, with Canada balsam, two beheaded 

 pins, laid horizontally, about twelve mm. apart. 



2. With a sterilized needle put a large drop of water 

 from the jar, thought to contain bacteria, on the 



1 The directions for the study of bacteria were prepared by Prof. James 

 S. Compton, Eureka College Eureka, Illinois. 



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