160 SOME MINUTE ANIMAL PARASITES 



have been described from time to time. Probably 

 one of importance will be found to be Noc's Entamaba. 

 This was first found as cysts from liver abscess and 

 in dysenteric stools, and also in the water-supply of 

 Saigon, Cochin China, and is now known to occur in 

 many parts of India. It is probably a variety of 

 E. histolytica, which it resembles in its polymorphism 

 and in its schizogony, being said to form many 

 merozoites. 



The spread of Entamoebse to man seems to take 

 place almost entirely by means of contaminated 

 water and raw vegetable food such as salads. Water 

 should always be boiled, and if there is a suspicion 

 of dysentery in a tropical district, abstention from 

 salads, etc., is most desirable, since they are easily 

 made infective by the ordinary agricultural process 

 of manuring land. 



