630 Vibrio Schuylkiliensis 



explanation of the occurrence of the organisms in Phila- 

 delphia waters can be given." 



A number of interesting spirilla, more or less closely 

 resembling that of Asiatic cholera, have been described 

 from time to time. Their variation from the true cholera 

 organism can best be determined by an examination of the 

 following table, though for precise information the student 

 will do well to look up the original descriptions, references 

 to which are given in each case. 



