. Microbes & toxins. Bacteriology; Toxins; Antitoxins. 142 MICROBES AND TOXINS Plasmodium of malaria present the best example of the labour necessary to reconstruct the biology of a parasite common to man and the mosquito. PROTOZOAL DISEASES Rhizopods Amoebfe.âAmcebic dysentery and liver abscess. A ciliated infusorian, Balantidium colt, may produce the same disorders. Haematozoa ^ Trypanosomes.^âSleeping sickness (human Trypanosomiasis).âTrypano- somiasis of animals : nagana, surra, dourine, mal-de-Caderas. Leishmania.â" Leishmanioses" : Kala-azar (the oriental sore, Biskra butto
. Microbes & toxins. Bacteriology; Toxins; Antitoxins. 142 MICROBES AND TOXINS Plasmodium of malaria present the best example of the labour necessary to reconstruct the biology of a parasite common to man and the mosquito. PROTOZOAL DISEASES Rhizopods Amoebfe.âAmcebic dysentery and liver abscess. A ciliated infusorian, Balantidium colt, may produce the same disorders. Haematozoa ^ Trypanosomes.^âSleeping sickness (human Trypanosomiasis).âTrypano- somiasis of animals : nagana, surra, dourine, mal-de-Caderas. Leishmania.â" Leishmanioses" : Kala-azar (the oriental sore, Biskra button, Aleppo button, etc., being particular cases). Piroplasmoses.âBovine Piroplasmoses (due to Piroplasma bigeiitinum, P. parvum, P. mutans ; canine, ovine, and equine Piroplasmoses. Plasmodia.âMalaria with its varieties: tertian, quartan, and testivo- autumnal or tropical tertian. Spiroch£Etes.âRelapsing fever (European, African, Asiatic, American). The spirillosis of fowls and geese. Human spirillosis = syphilis. The more the study of these cycles was advanced, the more one was compelled to acknowledge relationships between forms which did not seem in the least related. Es- tablished classifications have several times got into difficulties from trying to express genea- logical relationships between very diverse forms. Schaudinn saw in the life-cycle of the same parasite trypanosomes, spirochiEtes, and amoeboid forms. It has been necessary to re- cognise a relationship between the sporozoa (hasmo-sporidia) and the flagellates. The affinities of the spirilla and spiro- ^ According to the recent views of Hartmann, originating in Schaudinn's ideas, all the hseraatozoa mentioned here may properly be arranged in one â natural Fig. 55.âTrypanosomes of sleeping sick- ness (Trypanosoma gambiense): the form on the extreme right is in process of Please note that these images are extracted from scanned page images that may have been digitally enhanced for rea
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