The royal natural history . ircular hole, through which short lobose pseudopods emerge from the body in the interior of the dome - like box. Arcella is capable of secreting vesicles of air in its body-substance, whereby it is enabled to rise. In Euglypha the shell is sac-shaped, with a jagged free margin, and the surface covered with regular overlapping scales. In Difflugia the shell is strengthened by the addition of foreign particles. Amoebas are cosmopolitan; occurring in sea and in fresh water, and a few living in mosses or damp earth. Certain forms of dysentery are said to be due to amoeb
The royal natural history . ircular hole, through which short lobose pseudopods emerge from the body in the interior of the dome - like box. Arcella is capable of secreting vesicles of air in its body-substance, whereby it is enabled to rise. In Euglypha the shell is sac-shaped, with a jagged free margin, and the surface covered with regular overlapping scales. In Difflugia the shell is strengthened by the addition of foreign particles. Amoebas are cosmopolitan; occurring in sea and in fresh water, and a few living in mosses or damp earth. Certain forms of dysentery are said to be due to amoebas, or at least to amoeba-like phases in the life-history of other Protozoa. The fungus-animals (Mycetozoa), areclaimed both by botanists and best known species is the flowers of tan, found in tan-yards, in the form oflarge creeping masses of naked protoplasm, known as plasmodia. Cakes of proto-plasm become segregated from the main mass, and break up into amceba-like spores,which again fuse to form YOUNG capsuled animalcule, sekn fbom above(magnified). Fragment of Shell (magnified 600 diameters). 554 THE LOWEST ANIMALS. Order FORAMINIFERA. :? >^ -—
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectzoology
