138 PROTOZOAN PARASITISM 



Giardia has not been cultivated and would not be 

 revealed in such studies. Few, if any, intestinal 

 protozoa will be found by the average labor at or ian by 

 culture when not by measures here outlined, if prop- 

 erly carried out. Later, perhaps, but now we are 

 interested in avoiding further confusion and of clear- 

 ing some which exists. 



