. Biology . ble size, but compared with. Amoeba proteus they are quite small,having a length of about 25 to 30/i (Hooo to J-^oo of an inch.)In form they are somewhat like an elongated foot-ball with anobliquely truncated end, which we may term the anterior endsince this is the end in advance when swimming (Fig. 21).The posterior end is rounded and blunt, and has no structuralfeatures of importance. The animal moves through the waterby means of two parallel flagella which extend out to adistance equal to the total length of the body, the latter being 54 ORGANISMS OF ONE CELL dragged along by th


. Biology . ble size, but compared with. Amoeba proteus they are quite small,having a length of about 25 to 30/i (Hooo to J-^oo of an inch.)In form they are somewhat like an elongated foot-ball with anobliquely truncated end, which we may term the anterior endsince this is the end in advance when swimming (Fig. 21).The posterior end is rounded and blunt, and has no structuralfeatures of importance. The animal moves through the waterby means of two parallel flagella which extend out to adistance equal to the total length of the body, the latter being 54 ORGANISMS OF ONE CELL dragged along by the \agorous lashing of the water by theseflagella, and turning round and round on its long axis as itmoves forward. It is because of the flagella that Chilomonas is classified asone of the Mastigophora or whip-bearing protozoa. The flageUa are extremely delicate, and impossible to see whenthe organism is moving, but when the cells are killed with iodinethey can be made out easily. They are of uniform diameter.


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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectbiology