General physiology; an outline of the science of life . c-cording to it a small particle of living substance, cut off from the 58 GENERAL PHYSIOLOGY living cell under the microscope, would be an individual. Sucha particle, however, cannot be so considered when it is seen howevery minute mass of living substance, which has not the value ofthe cell, sooner or later invariably perishes. The capability of self-preservation may, therefore, be added to the conception of the in-dividual and the latter may be denned as follows: An organic in-dividual is a unitary mass of living substance, which under
General physiology; an outline of the science of life . c-cording to it a small particle of living substance, cut off from the 58 GENERAL PHYSIOLOGY living cell under the microscope, would be an individual. Sucha particle, however, cannot be so considered when it is seen howevery minute mass of living substance, which has not the value ofthe cell, sooner or later invariably perishes. The capability of self-preservation may, therefore, be added to the conception of the in-dividual and the latter may be denned as follows: An organic in-dividual is a unitary mass of living substance, which under definiteexternal vital conditions is capable of self-preservation. This definition applies to all single, free-living organisms whichare spatially separated from one another and are not artificiallydivided, in other words to all organisms in the form in which theyoccur in nature. But it includes more than single organisms; itincludes groups of organisms, each one of which is separated fromthe others by space, but which together form a unit. An example.
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Keywords: ., bookcentury1800, bookdecade1890, bookidgen, booksubjectphysiology
