A system of electrotherapeutics as taught by the International correspondence schools, Scranton, . late and directly supported by it is the faradiccoil, likewise five dry cells for supplying the current for itsprimary coil, and also four resistance-coils that act as volt-selectors when the direct current from a commercial circuit ismade use of. It is therefore seen that everything not absolutelynecessary for the selection and variation of the current is putout of the way, and this makes it possible for the operator tohandle the board with the least amount of confusion. 13. Perhaps the mos
A system of electrotherapeutics as taught by the International correspondence schools, Scranton, . late and directly supported by it is the faradiccoil, likewise five dry cells for supplying the current for itsprimary coil, and also four resistance-coils that act as volt-selectors when the direct current from a commercial circuit ismade use of. It is therefore seen that everything not absolutelynecessary for the selection and variation of the current is putout of the way, and this makes it possible for the operator tohandle the board with the least amount of confusion. 13. Perhaps the most important part of the board is theammeter. If the use of the whole apparatus is to be satisfactory,it is absolutely necessary that the indications of the ammeter §19 GENITOURINARY DISEASES be beyond doubt. The ammeters in most switchboards are ofan inferior grade, and they are not alone unreliable as to theirpresent indications, but the deterioration is such that theirfuture indications may differ greatly from the present delicate electric doses, the ammeter cannot be too good, and 1 JJ. A m a0Q n&A £>°ft HP z
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