Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . tends to flow toward the earthare known as ^^ positive bodies or bodies of high potential.^ They nredesignated by the plus sign (+). Those which tend to draw electricity G14 LECTURES OK NERVOUS DISEASES. from the earth are called negative bodies or bodies of loiv potential,and are desis^nated with the negative sign (—). Almost every knowns-nhstance may, therefore, be classilied either as positive or negativeunder certnin circu


Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . tends to flow toward the earthare known as ^^ positive bodies or bodies of high potential.^ They nredesignated by the plus sign (+). Those which tend to draw electricity G14 LECTURES OK NERVOUS DISEASES. from the earth are called negative bodies or bodies of loiv potential,and are desis^nated with the negative sign (—). Almost every knowns-nhstance may, therefore, be classilied either as positive or negativeunder certnin circumstances. Subsequent explanations will make thismore apparent. When we speak of the relative potential of two bodies, wemean the difference in degree of the potential of each. The bodies thus compared must both be positive or negative. Onemetal, for example, may have a potential seventy times that of theearth, and another one hundred times that of the earth. Both may bepositive, yet one is negative as compared with the other. Two suchmetals have been happily compared to reservoirs at different levels(De Watteville). The tendency between two bodies of different.


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