. The analysis of food and drugs . 30 CHEMICAL AND BIOLOGICAL ANALYSIS OF -WATER Infusoria. It may be said generally of the infusoria that they arecharacteristic of pond-water containing suspended deadorganic matter. Most ef the flagellated infusorians are tobe found in putrid vegetable infusions in immense numbers,and they ought not to be present in pure water, exceptperhaps very sparingly. Anthophysa. (40). Ceratium (41).—A fairly large infusorian. It is goblet-shaped, and has long projections or spines round the mouthpart. The opposite end is drawn out into a Coleps (42) is a globul
. The analysis of food and drugs . 30 CHEMICAL AND BIOLOGICAL ANALYSIS OF -WATER Infusoria. It may be said generally of the infusoria that they arecharacteristic of pond-water containing suspended deadorganic matter. Most ef the flagellated infusorians are tobe found in putrid vegetable infusions in immense numbers,and they ought not to be present in pure water, exceptperhaps very sparingly. Anthophysa. (40). Ceratium (41).—A fairly large infusorian. It is goblet-shaped, and has long projections or spines round the mouthpart. The opposite end is drawn out into a Coleps (42) is a globular infusorian, looking like awater having access through the meshes or poresbody. It is covered with cilia, and has an anteriorposterior opening, both surrounded by short spines. basket,of theand a
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