Synopses & Reviews
Synopsis
Excerpt from The Plant: An Illustration of the Organic Life of the Animal
A German naturalist, Mohl, selected for observation one of the fresh water algae, which had been previously figured and described as Conferva glomerata. This simple, thread-like plant was placed beneath the microscope, and the develop ment of the row of utricles of which its entire organization consists, watched. Very soon, Mohl observed that the inte rior face of the cavity of one of the utricles presented towards its middle part a fold, which increased almost imperceptibly until it ended by forming a complete wall dividing the cavity of the utricle into two parts. Each of these then dilated itself into a new utricle. Thus in the place of one cell there were two cells, which again divided in the same way, and so on. It is in this way that a single cell gives rise to a row of connect ed cells, when the division takes place in one direction, and to a plane or solid mass when it takes place in two or more di rections. There are other modes of increase which we shall notice in the ensuing pages; suffice it for the present to say, that their discovery originated in the investigation of crypto gamons plants of extreme simplicity of organization.
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