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Updated: May 20, 2025
It is only removed with difficulty, and generally leaves a dark coating on the dish, which is separated by repeated ignitions and treatment with acid. It is already known that manganese may be separated as the peroxide from its nitric acid solution.
When cold, and after exposure to light, this mixture will become luminous. Instead of these two ignitions, the same object may be in a measure accomplished by the addition of the full amount of sulphur with the phosphide and sulphide of calcium and raising it to a white heat but once.
First, That I have often observ'd that Calcin'd Lead Colliquated with fine White Sand or Crystal, reduc'd by ignitions and subsequent extinctions in Water to a subtile Powder, will of it self be brought by a due Decoction to give a cleer Mass Colour'd like a German Amethyst.
When the air is of a very explosive character even the Davy-lamps have to be extinguished, as the heat caused by the frequent ignitions within the lamp raises the gauze to a red heat, and the gas beyond will take fire. Jack took his place in the cage with Bill Haden and as many others as it could contain.
This is a basic principle of occultism. We must prove faithful in the small things, first. I rode over to a little cottage occupied by two young men who came here in the interests of writing careers. They had talent, soul, brain, balance, the unmistakable ignitions of the New Age. In a word, they were large-calibred men, whose business in life was to put in order a fine instrument for expression.
Crucibles to be used in fusion processes must be made of materials which will withstand the action of the fluxes employed, and crucibles to be used for ignitions must be made of material which will not undergo any permanent change during the ignition, since the initial weight of the crucible must be deducted from the final weight of the crucible and product to obtain the weight of the ignited substance.
The platinum was kept hot by the heat derived from the successive ignitions, and, the engine once started, no further external flame was required. I have here one of these platinum cages which has been in use. Finding this method not well suited for small engines, I produced the engine which is at present in the market under my name.
The cycle is different, and is designed for greater simplicity and the avoidance of back ignitions. It also consists of two cylinders, motor cylinder and the displace or charging cylinder. There is no intermediate reservoir. The displace crank leads the motor by a right angle, and takes into it the mixed charge of gas and air, in some cases taking air alone during the latter part of its stroke.
When platinum crucibles are used with compounds of arsenic or phosphorus, special precautions are necessary to prevent damage. This statement applies to both fusions and ignitions. Fusions with sodium carbonate can be made only in platinum, since porcelain or silica crucibles are attacked by this reagent.
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