. The Journal of hygiene . n takes place by fission and by formation of cysts, eachcontaining eight nuclei. On the other hand in E. histolitica thenucleus is very indistinct, and often absolutely invisible. Reproductiontakes place always by fission—never hy formation of cysts presentingeight nuclei, so characteristic of the E. coli. In my two cases (VI and XVII) I noticed that the amoebae 508 Dysentery in Ceylon presented a very indistinct nucleus—often quite invisible—and I neverobserved cysts with eight nuclei. These two characters would point toits being the Entamoeba histolitica of Schaudi
. The Journal of hygiene . n takes place by fission and by formation of cysts, eachcontaining eight nuclei. On the other hand in E. histolitica thenucleus is very indistinct, and often absolutely invisible. Reproductiontakes place always by fission—never hy formation of cysts presentingeight nuclei, so characteristic of the E. coli. In my two cases (VI and XVII) I noticed that the amoebae 508 Dysentery in Ceylon presented a very indistinct nucleus—often quite invisible—and I neverobserved cysts with eight nuclei. These two characters would point toits being the Entamoeba histolitica of Schaudinn. Presence of other Protozoa in the Intestine of cases ofAmoebic Dysentery. In my cases VI and XVII—besides many amoebae—a largenumber of Trichomonas intestinalis were present. The most of themwere of large dimensions, with a pear-shaped or roundish body and veryactively motile. In case XVII, in addition to many Trichomonas, I observed severalexamples of another form of protozoon (see Figure). This was of some-. Appearance of protozoon {Entamoeba undiilans Cast.) at differentintervals—(semi-diagrammatic) stools of Case XVII. what larger dimensions than T. intestinalis, the maximum diameterreaching from 18 to 30/i. The usual shape was oval. There was anabsolute absence of flagella. The organism presented a continuousrapid undulating movement from one to the other extremity of its body,and always in the same direction, this pointing to the presence of anundulating membrane. Now and then at an interval of 15-20 seconds avery narrow long pseudopodium was shot out from the body. Only onepseudopodium was emitted at a time. The pseudopodium was emittedvery quickly, and very quickly retracted. The pseudopodium wassometimes protruded from one part of the body and sometimes fromanother part. The organism had a finely granulated protoplasm; adifferentiation between ectoplasm and endoplasm apparently did notexist, the protoplasm being practically of the same character through
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecthygiene, bookyear1901
