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In the morning the patient was better, and 0.5 gramme of digitalis was then given in infusion per rectum, and repeated on the following day, after which the patient remained comparatively well until a year and a half later, when a second attack of the kind just described was quickly cut short by similar treatment.
A given amount of illumination can be produced much more cheaply by electricity than by any means of gas lighting or ordinary combustion. Among the first to demonstrate the feasibility of electric lighting was the philosopher Gramme, of Paris. In the early part of 1875 he successfully lighted his laboratory by means of electricity.
It will be remembered that the gramme weighs nearly 15-1/2 grains, and the cubic centigramme is equal to 1 gramme. The 2-2/3 ounces of meat were therefore mixed with nearly eight ounces of water, before being introduced into the stomach.
On the contrary, the gas issuing from the platinum rapidly turned Nessler reagent brown, and in a few minutes turned faintly acid litmus solution blue; the odor of NH3 was also perceptible. In one experiment 0.0144 gramme of ammonia was formed in two hours and a half.
The idea was never patented. Neither Pacinotti, who invented the machine originally, nor Gramme, one of the great names of modern electricity, nor this skilled practical electrician, Fontaine, who had charge of the exhibit of the Gramme system at Vienna, considered the fact of the transmission of concentrated power over a thin wire to a great distance as one of value to its inventor or to the industries of mankind.
Indeed, the most extraordinary discovery of all is that of the energy imprisoned within these tiny systems, which men have for ages regarded as "dead" matter. Sir J. J. Thomson calculates that, allowing only one electron to each atom in a gramme of hydrogen, the tiny globule of gas will contain as much energy as would be obtained by burning thirty-five tons of coal.
Had the Gramme or Siemens machine existed at that time, no doubt the subject would have been further advanced, for it was not merely the cost of the battery which stood in the way, but the inefficient motor, which returned only a small fraction of the power furnished by the zinc. Professor Silvanus Thompson informs us that an electric boat was constructed by Mr.
It consists of a two-wheeled carriage, drawn by one horse and carrying all the apparatus necessary for illuminating the works of the enemy. The machine consists of the following parts: A field boiler. A Gramme electric machine, type M, actuated directly by a Brotherhood 3-cylinder motor. A Mangin projector, 12 inches in diameter, suspended for carriage from a movable support.
It is a very curious thing, and I thought about it at the time, that when you consider the dynamos in use, you see how very little has been done to perfect the direct working dynamo in England. Although the principle of the dynamo originated with Faraday, yet all the early machines, Pacinotti, Gramme.
The electric motor is therefore essentially a dynamo, which on being traversed by an electric current from an external source puts itself in motion. Thus, if a current be sent through the armature of the Gramme machine, shown in figure 41, the armature will revolve, and the spindle, by means of a belt on the pulley P, can communicate its energy to another machine.
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