828 THE FLAGELLATA 



Lamblia multiplies by fission. Dissemination is effected by means of oval 

 cysts which are discharged in the stools, infection taking place through 

 drinking water or foods infected with the cysts. Calandruccio infected him- 

 self by swallowing a number of cysts recovered from the stools of an infected 

 person : mice and rats ( Mus decumanus) have been infected by the same 

 means (Perrongito, Grassi). 



Methods of detection. The technique to be adopted is that described for 

 the amoebae. 



