Laboratory Outline for General Bacteriology 



DESCRIPTIONS OF VARIOUS SPECIES OF BACTERIA 



The need has long been felt of having for student use a variety 

 of bacterial cultures that have been so carefully worked through 

 that their characteristics are known. With this in view named 

 cultures have been obtained from the American Museum of Natural 

 History in New York and from various other laboratories as well 

 as from our own. ' These have been carefully worked through, in 

 most cases several times r and by different persons. Work on doubt- 

 ful points has been repeated many times. 



Anyone familiar with similar work will understand the diffi- 

 culties encountered, such as changes in the cultures due to pro- 

 longed cultivation on artificial media, differences in appearances of 

 cultures and in reactions due to differences in materials, especially 

 peptone, from which the culture media are made, differences due 

 to personal equation, etc. 



We have retained the names of bacteria as they were sent to 

 us even when in a few cases it is believed they were named incor- 

 rectly. 



In the condensed form in which the descriptions are tabulated 

 we have not found it practical to always give all the characteristic 

 points and details in regard to a culture. The main points, how- 

 ever, are given in the majority of cases. 



The rii ire In the ina*. 

 Number, wnioh refers to pathogen! city, 

 has been omitted from these charts. 



42 



