. The analysis of food and drugs . 62. 63. 64. Each individual is round and ciliated, and has one longbifid flagellum. Trachelomonas cylindrica (62), piscatoris (63).—Theseorganisms are bottle-shaped. At the anterior end is asingle large flagellum set in a collar. Vorticella (64).— This organism is cup-shaped, and isattached to the substratum by a long contractile body has a lid, and both the lid and the opening intothe gullet are strongly ciliated. The nucleus is horseshoe-shaped. It is characteristic of stagnant water. Volvox globator (65).—A green, globu-lar colony of individuals.
. The analysis of food and drugs . 62. 63. 64. Each individual is round and ciliated, and has one longbifid flagellum. Trachelomonas cylindrica (62), piscatoris (63).—Theseorganisms are bottle-shaped. At the anterior end is asingle large flagellum set in a collar. Vorticella (64).— This organism is cup-shaped, and isattached to the substratum by a long contractile body has a lid, and both the lid and the opening intothe gullet are strongly ciliated. The nucleus is horseshoe-shaped. It is characteristic of stagnant water. Volvox globator (65).—A green, globu-lar colony of individuals. The colonyis spherical, and the individual creatureslive in the wall of the sphere. Eachhas two flagella and a nucleus, and isof a green colour. The ball, or hollowcolony, continually rotates by means ofthe flagella of each individual. Thisorganism gives rise to a fishy taste and smell in water. 3. 34 CHEMICAL AND BIOLOGICAL ANALYSIS OF WATER
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