Amebic Dysentery 



633 



I. AMEBIC DYSENTERY 



Amceba Coli (Losch, 1875); Amceba Dysenteri^e (Councilman 



AND LaM-EUR, 1893); ENTAMffiBA HISTOLYTICA (SCHAU- 

 DINN, 1903) 



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

 testine by Lambl; in dysentery, by Losch, Koch, Gaffky, KartuUs, 

 Osier, Councilman and Lafleur, and many others. The welcome 

 finally accorded to the organisms as excitants of dysentery was 

 sufi&ciently enthusiastic to compensate for the neglect of a quarter 

 of a century. 



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 Amceba dysenterise. The 

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

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



— V- 4 >-* 



Fig. 258. — Amoeba coli in intestinal mucus, with blood-corpuscles and 

 bacteria (Loscb). 



I 

 Losch had called the organism found in dysentery the Amoeba 

 coh. Stiles declared the nomenclature faulty, and pointed out that 

 Amoeba coU, variety dysenterise, must be the name of the patho- 

 genic form. Schaudinnf reviewed the subject and grouped all of 

 the iatestinal amebas under the following: 



I. Chlamydophrys stercorea (Cienkowsky). 

 II. Amoeba coli rhizopodia. 



1. Entamoeba coli (Losch) (Schaudinn). 



2. Entamoeba histolytica (Schaudinn). 

 To these has been since added in 1907: 



Entamoeba tetragena (Viereck). 



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



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



