The wire is attached to the conductor by being screwed into the socket (see a′, Fig. 14). A conducting cord is very apt to get frayed at the point of juncture, and that the wire which I recommend is not open to this objection is not the least of its advantages. [SN: Direct Electrization.] In direct electrization the rheophores should be firmly pressed down upon all points of the surface of the muscle, that all of its fasciculi may be equally electrized. With the Faradaic current it is convenient to apply the rheophores, held in the same hand (see Fig. 15), for from twenty to thirty seconds, to every part of the surface of the muscle, or group of muscles, promenading them as nearly as may be in lines from the origin to the insertion of the muscles. If the rheophores are not held in the same hand care should be taken to keep them near to one another, for the tension or penetrating power of Faradism is so great, that without this precaution there will be liability to excite reflex action. With the interrupted Voltaic current this liability does not exist, and a better plan when using it is to hold the sponge from the positive pole stationary, near to the origin of the muscles, and to stroke or paint as it were the entire muscular surface with the sponge from the negative pole, gliding it in lines from the position of the positive. In using the constant Voltaic current both sponges must be held quite immovable, and so applied it differs altogether in its effects from the very same strength of current interrupted by moving the conductors. I will demonstrate these different applications upon the extensors of my left wrist and fingers--Faradism--Voltaism--Constant Current. [Illustration: FIG. 14. Metallic Disk, covered with Wash-leather.] [Illustration: FIG. 15. Method of holding Sponge-holders with Sponges inserted.] [SN: Indirect Electrization.]