. A practical treatise on electrodiagnosis in diseases of the nervous system . alvaniccurrent just enumerated, are absolutely essential for the prac-tice of electro-diagnosis. All of these, however, are rarelypresent in the ordinary batteries supplied for medical pur-poses ; I have therefore had constructed an element boardwhich contains all these necessaries, and possesses also otherconveniences (fig. 1). This is arranged in a portable formand can be readily attached to any battery. To this is fixedwires from both the faradic and galvanic apparatus, and bymeans of a switch, either of the curr
. A practical treatise on electrodiagnosis in diseases of the nervous system . alvaniccurrent just enumerated, are absolutely essential for the prac-tice of electro-diagnosis. All of these, however, are rarelypresent in the ordinary batteries supplied for medical pur-poses ; I have therefore had constructed an element boardwhich contains all these necessaries, and possesses also otherconveniences (fig. 1). This is arranged in a portable formand can be readily attached to any battery. To this is fixedwires from both the faradic and galvanic apparatus, and bymeans of a switch, either of the currents may be directedthrough the pair of rheophores to which the electrodes areattached. Both currents pass tlnough the same rheostatwhich regulates their strength. The galvanic current furtheris connected with a galvanometer, a commutator, and a rheo-tome. Thus the two batteries being attached to the elementboard, either current can be passed through the electrodes, GENERAL ACCESSOEIES. 15 either can be regulated, measured, interrupted or alternatedas desired.* Fig. ]. /F^\.
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