. The practical study of malaria and other blood parasites. Malaria; Mosquitoes; Trypanosoma; Blood. 38o ScHAUDiNN has traced their further in Culex pipiens. The general development is similar to that of T. noctuae, for these also have a trypano- some V""".Vr/'"y Fig. 86. Development in the blood of Sp. aiemanni and change to vesting forms [after Schaudinn) Development in mosquito. 1. Ookinets of three kinds are developed in the stomach. 2. From these are developed trypanosomes which, in this case, are minute, and the males so much so that they are very


. The practical study of malaria and other blood parasites. Malaria; Mosquitoes; Trypanosoma; Blood. 38o ScHAUDiNN has traced their further in Culex pipiens. The general development is similar to that of T. noctuae, for these also have a trypano- some V""".Vr/'"y Fig. 86. Development in the blood of Sp. aiemanni and change to vesting forms [after Schaudinn) Development in mosquito. 1. Ookinets of three kinds are developed in the stomach. 2. From these are developed trypanosomes which, in this case, are minute, and the males so much so that they are very difficult to see except when agglomerated in rosettes. 3. The backward and forward movement of spirochaetes results from the fact that two of these trypanosomes, after division, remain attached. 4. Multiplication goes on in the stomach, and the result- ing forms are so extraordinarily minute that they are "invisible except in agglomerated masses, 5. These trypanosomes now penetrate the epithelium of the malpighian tubes, multiply here, and come to rest. They eventually pass out with the malpighian secretion, reach the great curvature of the colon, and then follow the same course as T. noctuae. The mosquitoes can infect a fresh owl after their third meal of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stephens, John William Watson, 1865-; Christophers, S. R. (Samuel Rickard), 1873-; Liverpool School of Tropical Medicine. London, Pub. for the Univ. Press of Liverpool by Williams & Norgate


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