. American X-ray journal . bian 39 Dangers to the X-Ray Operator, by JohnT. Pitkin 44 Electro Therapy, Lesson 9. Static Cur-rents 48 Two Cases of Severe X-Ray Necrosis Pre-senting Unusual Features, by ClarenceEdward Skinner 50 Suggestion in its Relation to ElectricalApplications 53 News and Notes. A Trip Eastward 52 Copies of X-Ray Journal Wanted 52 Electrical Typewriters 52 New System of Wireless 43 The Telephone as a News Vendor 60 Hydro Therapy in Insanity 60 Colonic Lavage 61 Radium as a Generator of 61 Radium 61 X-Ray in Eye Diseases 61 Light Therapy in Eye Dis
. American X-ray journal . bian 39 Dangers to the X-Ray Operator, by JohnT. Pitkin 44 Electro Therapy, Lesson 9. Static Cur-rents 48 Two Cases of Severe X-Ray Necrosis Pre-senting Unusual Features, by ClarenceEdward Skinner 50 Suggestion in its Relation to ElectricalApplications 53 News and Notes. A Trip Eastward 52 Copies of X-Ray Journal Wanted 52 Electrical Typewriters 52 New System of Wireless 43 The Telephone as a News Vendor 60 Hydro Therapy in Insanity 60 Colonic Lavage 61 Radium as a Generator of 61 Radium 61 X-Ray in Eye Diseases 61 Light Therapy in Eye Diseases 62 Protection Against Roentgen Rays 62 X-Ray Prize Essays 62 The Degenerate Tonsil 62 Removal of a Nickel from Esophagus. 63 Electricity for Blepharospasm 63 Effects of Radium on Mice 63 The Iron Light in Radio 63 Jail for Doctor and Nurse 63 Prohibition of Exhibitions of Hypnotism 68 Finsen Light Treatment 64 High Frequency Currents for 64 Radium in Medicinal Springs 64 A Singing Vacuum Tube 6*. DR. CARL BECK. One ot the first Physicians in the World to treat Sarcoma with the X-Ray. THE AMERICAN X-RAY JOURNAL Devoted to Practical X-Ray Work and Allied Arts and Sciences. Vol. XIV. CHICAGO, FEBRUARY, 1904. No. 2 Principles of Electro=Therap>v BY H. PRESTON PRATT, M. ILL. The discovery and study of the Roent-gen ray and radium has thrown morelight on and gives us a better idea andconception of the constitution of matterthan all other experiments and discov-eries put together since the time of lias assisted us materially in the studyand development of electro therapy. Ithas developed the electron theory, whichgives us clearer conception of the rela-tionship of electricity to matter, therebypartially explaining the associationtheory. Faraday believed that there was no flowof currents over the wire but that motionwas imparted to the polarized moleculesof the conductor. Berzelius after himclassified fifty-six of the eighty odd ele-
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