American journal of physiology . Figure i. 212 Sidney P. Bndgett. and into these some of the vacuoles usually escape ; the vesicles finallybiust, and the cell contents are extruded (Fig. i). If a drop of a per cent solution of potassium cyanide be addedto several drops of Paramoecium culture, there result structural changes which are apparentlyiM\. exactly similar to those de-rT scribed above, but they occurimmediately (Fig. 2). If thesolution be more concentrated,for instance per cent, thebursting often occurs at once, without a preceding marked change ofform. Amoeba. — When deprived


American journal of physiology . Figure i. 212 Sidney P. Bndgett. and into these some of the vacuoles usually escape ; the vesicles finallybiust, and the cell contents are extruded (Fig. i). If a drop of a per cent solution of potassium cyanide be addedto several drops of Paramoecium culture, there result structural changes which are apparentlyiM\. exactly similar to those de-rT scribed above, but they occurimmediately (Fig. 2). If thesolution be more concentrated,for instance per cent, thebursting often occurs at once, without a preceding marked change ofform. Amoeba. — When deprived of oxygen. Amoeba becomes vacuolatedand tends to assume a spherical form (Fig. 3). A dilute solution ofantipyrine produces the same effects (Fig. 4). The same is true ofdigitaline and potassium cyanide Figure 2.


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