Some comparatively recent work by Richard Zsigmondy, however, seems to have finally cleared up the chemical nature of this curious substance.
A useful manual for students in chemistry is the Chemical Experiments of Prof.
A recent explosion, however, at a large chemical works at St. Helens, in England, seems to disprove this view.
Reese, in the Chemical News, contains some interesting information regarding this curious compound.
In all these operations, the same affinities manifest themselves which determine chemical combinations both in our laboratories and in the interior of the earth.
The former, as being more accessible to the exercise of thought, appertains to mathematics; the latter, from the apparent mysteries and greater difficulties, falls under the domain of the chemical sciences.
Gaseous emanations rising from very unequal depths, and therefore conveying substances differing in their chemical nature, imparted greater activity to the Plutonic processes of formation and transformation.
The objects to which I allude, are chemical experiments, and experiments in every other branch of Natural Philosophy: and a study of Natural History by observation and examination of natural subjects.
It is subject to a continual chemical analysis, and as continual a new composition.
To shew that Newton was thoroughly ignorant of the chemical properties of matter, I will quote again a paragraph, which I quoted in page 341, Vol.
Ure's Chemical Dictionary, will explain all my assertions on the properties of matter.
Salinometers are sold for about $1 each by firms dealing in chemical apparatus and supplies.
The apparatus and chemicals needed for this test can be obtained from any firm dealing in chemical apparatus and supplies.
From this point the white rays of a chemical flare lighted up the surface of the sea as far as the harbour bar, which, with its flanking rocks, resembled a seething cauldron.
Further towards the head of the pier is a line of big flat Scotch motor drifters, built for rough weather with 9-inch timbers, their decks a maze of wire nets, glass floats and brick-red chemical canisters.
Conjectures can here determine nothing with certainty, at least they can only bring small satisfaction to a chemical philosopher, who must have his proofs in his hands.
In his "Chemical Treatise" Scheele endeavours, at considerable length, to prove by experiments his views as to the compound character of heat and of light.
Hitherto chemical investigators are not agreed as to how many elements or fundamental materials compose all substances.
In the manufacture of Bessemer steel, which has now largely displaced wrought iron in the arts, it is necessary to use an iron ore of peculiar chemical composition.
This work was carried on secretly, but well did the city know that the councillor or the secretary still used his chemical apparatus to make gold.
However this may be, we now see every atom in the universe athrill with force, and possessed of chemical virtues, and, under conditions, with the faculty of activity.
The stomach is a chemical retort, the body a chemical laboratory.
Life, to all appearance, is but the result of combined chemical and mechanical processes.
And so in chemical and capillary action, the correlation of forces everywhere is found.
There is in this something quite beyond and apart from chemical changes however complex; and it has been well said that the first vegetable cell was a new thing in the world, possessing altogether new powers.
The complicated chemical combinations of that nervous mass pass over into other combinations--by decomposition, and the kinetic energy produced by them is transformed into other forms of nature.
Thus, no less an authority than Sir William Crookes addressing the Chemical Society as its president, thus expressed himself:[40] If we may hazard any conjectures .
The only reason distinctly implied is because the physical and chemical conditions of the earth's surface were different in the past from what they are now.
Bile and saliva are material substances, with a definitechemical constitution, each adapted to one definite function.
The button of metallic lead found at the bottom of the crucible in chemical assays, contains also the silver, and other metals, if any should be present in the ore.
The whole was enclosed in a good Hessian crucible, previously smeared with charcoal, with a luted cover, and exposed for twenty minutes to the high heat of a small chemical blast-furnace.
Of this I mixed six parts with four of pulverized borax, and a little charcoal, and submitted it to the intense heat of a small chemical furnace.
Of the chemical or medicinal properties of the water, little is known, as no accurate analysis has been made.
If you'll be so good as to step into the electro-chemical building?
Almost all the following morning, working at his bench in the electro-chemical laboratories of the great Oakwood Heights plant, Gabriel Armstrong pondered deeply on the problems and responsibilities now opening out before him.
In 1624 some young chemists of Paris, having taught the experimental method and cut loose from Aristotle, the Faculty of Theology besets the Parliament of Paris, and the Parliament prohibits this new chemical teaching under penalty of death.
France carried out the same policy, and even forbade the possession of furnaces and apparatus necessary for chemical processes.
Under this law the chemist John Barillon, for possessing chemical furnaces and apparatus, was thrown into prison, and it was only by the greatest effort that his life was saved.
The activities, the chemical changes in the body, are mainly, though not entirely, between the oxygen of the air and the carbon and hydrogen of our food.
The powder itself should have good keeping qualities, that is, not be liable to chemical changes within ordinary ranges of temperature or in different climates when stored for a few years.
With the modern colloid propellants the most dangerous operations are the chemical processes in the preparation of nitroglycerin, the drying of guncotton, &c.
This excess of heat energy[1] is due to some form of potential energy in the compound which becomes actual heat energy at the moment of dissolution of the chemical union.
Extraction, in chemical technology, is a process for separating one substance from another by taking advantage of the varying solubility of the components in some chosen solvent.
An index to those which have appeared in the Journal of the Society of Chemical Industry is to be found in the decennial index (1908) compiled by F.
Guncotton alone in the colloid state burns very slowly if in moderate-sized pieces, and when subdivided or made into thin rods or strips it is still very mild as an explosive, partly from a chemical reason, viz.
In these powders slightchemical changes are generally followed by noticeable ballistic changes.
If, instead of the herbs or spices themselves, it is decided to use the prepared essences, care should be taken to obtain essences prepared from the herbs, and not mere chemical imitations.
Unglazed stone jars are of all vessels the most suitable for the containing of pickles, both by virtue of their chemical composition, and on account of their pleasant wholesome look.
You must take the word of the trained observer--just as you do in the matter of chemical analysis.
There was indeed one sad mistake; and I feel bound, in self-defense, to state that it was made during an absence of mine in Europe: this was the erection of the chemical laboratory upon the promontory northwest of the upper quadrangle.
This being done, I conducted him to the opening of the new chemical laboratory.
A chemical corps has come out to join the sappers, and the gunners have received some highly finished trench-mortars from Vickers's.
They are in charge of "corporals" in the chemical corps of the sappers, and your corporal is, in nine cases out of ten, a man whose position in the scientific world at home is one of considerable distinction.
I’ve spent all my own money and all of Edmonia’s for chemicals and chemical apparatus, which I foresee that you and I will need in order to make medicines and salt and soda and saltpetre for our soldiers and people.
It involves some very careful chemical processes--for you must first manufacture a part of your chemicals out of their raw materials.
He even sent to Richmond for a plumber to put in chemical sinks, drain pipes and other laboratory fittings.
He was just now as earnest in his speculations concerning the girl he had so oddly encountered, as if she had been a new chemical reaction.
A love affair such as this had proved to be was little less or more than a drop of coloring added to a glass of clear water, or a foreign chemical agent introduced into a delicate chemical formula.
This one-headed Cerberus being hung so as to oscillate in the wind, right across the cat-leap, I felt quite safe, so long as my chemical mixture should continue luminous.
Perhaps there was also some chemical action of the rays of light which evoked as well as showed the colour; but of this I do not know enough to speak.
