the case by storing therein as much as possible of unslaked lime, in slatted boxes, covered with two layers of muslin, and a machine thus well cared for is capable of giving an efficient discharge every day in the year.

The currents of high frequency and high potential which can be obtained from such machine and resonator, are the D'Arsonval, Tesla, and Oudin currents. The D'Arsonval current can be utilized by three methods:

First.—The direct, bipolar method is effected by using a metal plate, as the indifferent electrode attached to one end of the solenoid, and a glass vacuum electrode, or metal electrode, connected to the other end of the solenoid. The latter electrode

I-1. Connection from terminals of static to Leyden jars; 2. Connection from D'Arsonval posts to meter; 3. Connection from meter to vacuum electrode; 4. Connection from D'Arsonval post to ground; 5. Connection from ground to metal plate in contact with patient.

is placed upon the point of diseased condition and attached to the side of the positive Leyden jar; or

Second. This current may be used in the indirect or grounded method. Here we ground the end of the solenoid on the side of the negative Leyden jar, ground the indifferent metal plate electrode, and place the glass vacuum or other electrode (connected to the other end of the solenoid)-to the seat of disease.

In practicing these two methods, we place our patient on the insulated platform, using well-insulated cords as short as possible. These cords must be carefully prevented from touching the patient when employing glass vacuum electrodes lest painful sparks strike the patient. The glass electrodes should be of low vacuum and have a leading-in wire. The metal balls at the spark-gap should touch each other when first completing the arrangement of current circuit, and then be carefully separated to the length of spark-gap desired. A hot wire meter should be placed in circuit.

The indirect, or grounded method, has been very successfully used by the writer in five cases of traumatic synovitis with effusion of the knee-joint. Two applications of ten minutes' duration, using 150 milliamperes, and allowing two days to intervene between treatments, have sufficed to remove the swelling and pain in each case. One case was of three months', one of four months', one of eleven days', another of a week's, and the last of six months' standing.

This method has also been efficient in cases of gonorrheal metritis and vaginitis. With it, tubercular glands have been removed in two cases. Three cases of gleet have been cured by placing the parts in a cup-shaped electrode filled with saline solution, connecting this to the side of the negative Leyden jar and placing the grounded metal electrode to the perineum.

Several cases of gonorrheal rheumatism have been successfully treated by placing the grounded metal plate on one side of joint and the glass vacuum electrode on the other, using a current of 250 milliamperes for from five to ten minutes, according to the tolerance of the skin. Immediately after such an application the skin will be very red and covered with wheals. In a day or two the skin will peel off and the swelling subside. Two or three days should intervene between applications.

The third method of utilizing the D'Arsonval current is that of auto-condensation. We make use of the ordinary folding chair employed in other static modes of application. Place on this a piece of tin foil (22-in. gauge), large enough to cover the full length of the chair. Over the tin foil put two or more layers of very thick, soft felt. Place the patient on the chair thus prepared; now connect one end of the solenoid to the metal underneath the felt, and place another metal plate, 7 x 10 inches,

on the patient's abdomen or chest, connecting this to the other end of the solenoid.

The wires used should be short as possible and well insulated. A hot wire meter should be employed. Though it cannot be said that a hot wire meter measures the current with accuracy, it is the only means we have at present which gives us some idea of the rushes of current.

The class of cases that have yielded best results in my hands

I-1. Connection from terminals of static to Leyden jars; 2. Connection from D'Arsonval post to meter; 3. Connection from meter to large metal plate on chair; 4. Connection from D'Arsonval post to small metal plate in contact with patient; 5. Felt between large metal plate and patient.

has been conditions due to faulty metabolism, to improper living, excesses in food and drink, and insufficient exercise.

In five cases of obesity a reduction of from eight to twentyfive pounds has been accomplished within two months.

In several instances, men who had been drinking heavily for some weeks, and suffered as a consequence from gastric disturbances, insomnia, nervousness, etc., have been relieved and put in condition to resume their accustomed duties. This, too, in from two to six treatments.

Cases of gonorrheal rheumatism have been very much bene

fited. The following cases may be cited: C. D. H., æt. twentyeight, musician, contracted gonorrhea six years ago which was never completely cured. He came to me December, 1905, suffering from gleet, pains in various points, irregular fever, nasal and pharyngeal catarrh, and was very anemic. He was placed on the auto-condensation couch for fifteen or twenty minutes. three times weekly, and a current of 400 milliamperes passed. At the end of the second week occurred what seemed to be a reaction violent fever (temperature 104 1-2°), pains in joints, and sore throat. This passed off in two days and treatment was resumed. The gain from now on was rapid. His weight increased twenty pounds in three weeks.

He then brought his wife for treatment. She had had pus tubes removed several years before. I found her suffering from sharp pains in the abdomen, purulent local discharge, etc. Fourteen applications of auto-condensation, twenty minutes. each, 250 milliamperes, benefited her very materially.

Cases of pulmonary troubles have responded well. J. P., æt. sixty, merchant, had pneumonia in 1896. This was followed by empyema, which was evacuated, and recovery resulted. Had syphilis one year later. On July 4, 1905, he was seized with a chill and pain in the left side, the site of the previous empyema. I found his temperature 103°, dullness on percussion on the left side, some râles and great prostration, as well as pain, stiffness, and swelling in knee, elbow and shoulder joints. The usual methods of treatment in such cases were employed at his home but without material benefit. A few tubercle bacilli and many streptococci being found in his sputum, he was advised to come to the office for treatment. This he did on September 10. He was placed on the auto-condensation couch every other day, a current of 250 milliamperes was employed for twenty minutes, followed by sharp resonator sparks to chest and joints. His recovery was complete October 13.

In two cases of herpes zoster auto-condensation gave great relief from the pain, hastened healing, and improved the general health, which had been poor previous to the onset of the trouble.

In cases of neurasthenia and hysteria much good has been accomplished by using three or four thicknesses of felt and a current of 150 milliamperes for twenty minutes. The object in using so much felt is to increase the resistance, making it possible to use a greater spark length at the exploders, thus in

creasing penetration without too much amperage. The effect on these patients was a quieting one, and a great improvement in general nutrition and ability to sleep.

The Tesla current has not been used by the writer to any great extent, owing to its lacking adaptability for the bi-polar methods to which we have found the D'Arsonval current applicable.

The spark from the Tesla has a peculiar arborescent appearance when it strikes the skin, showing its lack of penetration. The crief use of the Tesla is as a means of step-up from the D'Arsonval to the larger solenoid.

The Oudin Current.

This Oudin current is possessed of penetrating properties to a high degree, as can be shown in the following manner.

I-1. Connection from terminals of static to Leyden jars; 2. Connection from Tesla post to solenoid; 3. Connection from solenoid to brush electrode; 4. Connection from Tesla post to ground; 5. Connection from ground to metal plate in contact with patient.

Have several persons join hands and stand before the resonator in action. Let the first person in line be connected by wire and