The electro-therapeutic guide, or, A thousand questions asked and answered . of employing this current, although a surgical ratherthan a therapeutic method, is in galvano-cautery. This is quite an impor- 64 THE ELECTRO-THERAPEUTIC GUIDE taut branch of electrification with the phy-sician making a specialty of eye, ear,nose and throat work. The great ad-vantage of cautery in man^- minor cut-ting operations is in the almost certainavoidance of hemorrhage. A transformerworking on the principle of an inductioncoil is used to adapt the current to caut-ery work. The 110 volt or 55 volt alter-nating c
The electro-therapeutic guide, or, A thousand questions asked and answered . of employing this current, although a surgical ratherthan a therapeutic method, is in galvano-cautery. This is quite an impor- 64 THE ELECTRO-THERAPEUTIC GUIDE taut branch of electrification with the phy-sician making a specialty of eye, ear,nose and throat work. The great ad-vantage of cautery in man^- minor cut-ting operations is in the almost certainavoidance of hemorrhage. A transformerworking on the principle of an inductioncoil is used to adapt the current to caut-ery work. The 110 volt or 55 volt alter-nating current is attached to the properbinding posts of the transformer; a cur-rent of about two amperes is thus fed tothe appliance. The transformer convertsthis current of 110 volts and two amperesto a current of about six volts and thirtyor forty amperes, which is sufficient to heat most platinum cautery knivesand loops. The cautery transformer is a very simple device and makes amost valuable addition to the equipment of a ph3sician who has the alter-nating current How is electrification used in diagnosis? Another use to which the alternating current may be subjected is to lightdiagnostic lamps. Perhaps this matter may seem a verj^ simple one to dwellupon at first thought, but upon further, consideration the complexity of thesubject will be appreciated. There isfrequent call for a wall plate or otherpiece of apparatus which will combine acurrent for diagnostic lamps among otherfeatures; this is an easy matter to arrange,regardless of whether the plate is to beused with either direct or alternating cur-rent; but especial stress should be laidupon the fact that a seperate contrivance,such as a large, heavy current graphiterheostat will prove more suitable to thepurpose. Another manner of using thealternating current to light small lampsis by using series lamps in connection toregulate the flow of current. A number of diagnostic lamp sets are on the
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