As an example of stepping backward, I may refer to what the newspapers have described as the "discoveries" of Mr. Edison, or the use of an incandescent wire, or stick, or sheet of platinum, or platino-iridium; or a thread of carbon, of which the "Swan" and other modern lights are rival modifications.
Galyl, luargol, and other preparations act in the same way as the "606" and "914" groups. The "606" preparations may be introduced into the veins by injection or by means of an apparatus which allows the solution to flow in by gravity. The left median basilic vein is selected, and a platino-iridium needle with a short point and a bore larger than that of the ordinary hypodermic syringe is used.
By Intra-muscular Injection. This consists in introducing the drug by means of a hypodermic syringe into the substance of the gluteal muscles. The syringe is made of glass, and has a solid glass piston; the needle of platino-iridium should be 5