. A manual of elementary zoology . Zoology. Fig. 90.—Entamoeba dysenteries.—After Fantham. A, Encysted form with four nuclei; B, senile form with " ; ating individuals are apt to undergo a process resembling budding. A flagellate protozoon known as Trypanosoma is re- sponsible for various very dangerous diseases Trypanosoma. K. , , J. ° of man and animals in warm countries. Trypanosoma is parasitic in the blood and other fluids of backboned animals, but also capable of living in an invertebrate which sucks the blood of its vertebrate host, and by this it is transferred from one
. A manual of elementary zoology . Zoology. Fig. 90.—Entamoeba dysenteries.—After Fantham. A, Encysted form with four nuclei; B, senile form with " ; ating individuals are apt to undergo a process resembling budding. A flagellate protozoon known as Trypanosoma is re- sponsible for various very dangerous diseases Trypanosoma. K. , , J. ° of man and animals in warm countries. Trypanosoma is parasitic in the blood and other fluids of backboned animals, but also capable of living in an invertebrate which sucks the blood of its vertebrate host, and by this it is transferred from one vertebrate to another. It has a worm-like body, about one-thousandth of an inch in length, tapering towards the ends, but more pointed in front than behind. The shape of the body is maintained by a strong pellicle. A single flagellum stands at the front end, and from its base an undulating membrane runs along one side nearly to the hind end. The flagellum is continued as a strongly-staining thread along the free edge of the membrane, and terminates behind in a minute " basal granule " or blepharoplast, embedded in the 'cyto- plasm. By the working of the undulating membrane and flagellum the animal swims rapidly with a graceful wavy movement, either forwards or backwards. There is no contractile vacuole. Near the middle of the body is an egg-shaped nucleus, but a smaller mass, which stains like the nucleus, stands close to the blepharoplast. This smaller. 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
