40 PARASITIC AMOEBAE OF MAN. 



or any blood-stained material should be examined as 

 well. Most stools from amoebic dysentery cases con- 

 tain gelatinous material which frequently contains 

 numerous amoebae, and such material should always 

 be fully examined. 



The feces should be examined as quickly as pos- 

 sible after they have been passed as the amoebae are 

 much more easily recognized when they are motile. 

 No disinfectant should be used in stools which are 

 to be examined for amoebae, nor should urine be 

 mixed with the stools. In temperate regions, espe- 

 cially in the winter, the receptacle used in collecting 

 the specimen should be warmed, but care should be 

 taken if water is used for this purpose, that it be 

 boiled, as otherwise water amoebae might be mistaken 

 for parasitic amoebae, having reached the feces in this 

 manner. 



Unless the reproductive cycle of an organism is 

 to be studied the warm-stage is not necessary, but it 

 should always be used in research work upon these 

 parasites, as in no other way can the various stages 

 in growth and reproduction be thoroughly studied. 

 When extensive studies of the vital activities of 

 amoebae are to be undertaken, an incubator, designed 

 to contain the microscope, will be found to be a great 

 convenience. 



Although it is generally stated that entamoebae 



