Amebic Dysentery 



673 



I. AMEBIC DYSENTERY 



Amceba Coli (Losch, 1875); Amceba Dysenteric (Coun- 

 cilman AND Lapleur, 1893); Entamoeba Histo- 

 lytica (ScHAupiNN, 1903) 



As has been shown, amebas were first found in the human in- 

 testine by Lambl. Their presence and probable importance in dys- 

 entery was subsequently worked out by Losch, Koch, Gaffky, Kar- 

 tulis, Osier, Councilman and Lafleur, and many others. 



CeUi and Fiocca* were the first to study the amebas system- 

 atically and to cultivate them upon artificial media. Councilman 

 and Lafleur pointed out that there were two varieties of amebas 

 which they called Amoeba coli and Amoeba dysenteriae. The 

 former was supposed to be a harmless commensal, the latter a 



""!>.', rM'i 



Fig. 265. — ^Amoeba coli in intestinal mucus with blood-corpuscles and bacteria 



(Losch). 



pathogenic organism and the cause of dysentery. As, however, 

 Losch had called the organism found in dysentery the Amceba 

 coli, Stiles declared the nomenclature faulty, and pointed out that 

 Amoeba coh, variety dysenteriae, must be the name of the pathogenic 

 form. Schaudinnf reviewed the subject and grouped all of the 

 intestinal amebas under the following: 



L Chlamydophrys stercorea (Cienkowsky) . 



n. Amoeba coli rhizopodia. 



1. Entamoeba coli (Losch) (Schaudinn). 



2. Entamoeba histolytica (Schaudinn). 

 To these has been since added in 1907: 



Entamoeba tetragena ( Viereck) . 

 I. Entamoeba Coli (Losch, 1875).— This organism seems to be a 

 harmless comipensal, living in the intestines of man, many domestic, 



*"Centralbl. f. Bakt. u. Parasitenk.," 1894, xv, 470. 



t "Arbeiten aus d. kaiserl. Gesundheitsamte.," 1903, xrx, No. 3. 



43 



