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Haeckel’s demonstration of the possibility of spontaneous generation is along these lines. He refers to the cytodes, the blood corpuscles, to alleged or actual non-nucleated cells, to bacteria, to the simplest forms of cell-structure, as proofs of the possibility of a descending series of connecting-links. Unfortunately, this primitive slime soon proved itself an illusion.
The earlier and lower stage are the unnucleated cytodes, the body of which consists of only one kind of albuminous matter the homogeneous plasson or "formative matter." A phytomoneron, the globular plastids of which secrete a gelatinous structureless membrane. The Monera are permanent cytodes. Their whole body consists of soft, structureless plasson.
The soft slimy plasson of the body of the moneron is generally called "protoplasm," and identified with the cellular matter of the ordinary plant and animal cells. But we must, to be accurate, distinguish between the plasson of the cytodes and the protoplasm of the cells. This distinction is of the utmost importance for the purposes of evolution.
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