OF THE ALIMENTARY TRACT 191 



Hollander (1923) after failing to effect the presence 

 of the organism with arsphenamine injected in the 

 usual way at 3 to 5 day intervals, alternated these in- 

 jections with duodenal lavage with magnesium sul- 

 phate solution in one case, the patient remaining free 

 of the parasite to examination of duodenal contents 

 over a period of six months. 



Kofoid (1919) et al., freed rats of their natural 

 infection by giving arsenobenzol in one intravenous 

 injection of four to eight times the ordinary human 

 dose, pro-rated by weight, the rat successfully stand- 

 ing the treatment. 



At the present time eliminative therapeutics is in 

 an uncertain and experimental stage. 



On this account and because of the uncertainty as 

 to the necessity for treating it at all, ill advised thera- 

 peusis should be avoided and any measures used in 

 the cases of young children should be very thought- 

 fully regarded first. 



TRICERCOMONAS INTESTINALIS 



In addition to the more common and larger intes- 

 tinal flagellates, man harbors several less common and 

 smaller forms. 



Among these is Tricercovionas intestinalis (Wen- 

 yon and O'Connor, 1917), found in widely separated 

 regions but apparently of comparatively rare occur- 

 rence. 'It is subject to the likelihood of confusion 

 with other small flagellates but the description of 



