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That is to say, each cell is a minute portion of living matter, or protoplasm, separated from its neighbors by a partition, the cell-membrane; each has its own seat of government, the nucleus, located near its center; and each, to all intents and purposes, leads an individual existence. THE GERMINAL CELLS. Many of the cells in the human body are able to produce others of their kind.
The introduction of cream-of-tartar along with the arsenic neutralised its effect, but not so with the other two; and, singularly enough, the appearance of the liquor always shewed when the poisoning was complete; 'the nitrogenous layer on the cell-membrane seeming to have undergone a change similar to that produced by boiling. Judging from the results, Professor Erni believes 'that alcoholic fermentation is caused by the development of fungi.
The result of fertilization is the development of the ovule into the seed. By the segmentation of the fertilized egg, now invested by cell-membrane, the embryo-plant arises.
In all the higher Protozoa, as also in the Protophyta, we meet with a fundamental differentiation into cell-membrane and cell-contents, answering to that fundamental contrast of conditions implied by the words outside and inside.
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