In the middle of the seventeenth century, the preparation of aquafortis and the process of assaying in the moist way were fully known in France.
It appears to me, that the first intelligible account of aquafortis occurs in the writings of the Arabians, or of the pupils of Arabian chemists.
They neither made aquafortis nor gunpowder; and they seem scarcely to have had any occasion or opportunity to discover its deflagration and the carbonization thereby effected, or, when observed, to examine and describe it.
After 1670 he accidentally found out by the glass of his spectacles, upon which some aquafortis had fallen, becoming quite soft, the art of etching on glass.
At any rate, in the month of January 1637, the distillers obtained a guild letter, in which aquafortis is mentioned among the articles sold by them.
Michael Meier, the most learned chemist of the seventeenth century, says that Vincentius speaks of aquafortis as of a secret; but the passage I have not yet been able to find[1256].
We are told that some aquafortis having fallen by accident upon his spectacles, the glass was corroded by it; and that he thence learned to make a liquid by which he could etch writing and figures upon plates of glass[222].
This appears probable, because about that period aquafortis and various arts are oftener mentioned, and in a much clearer manner, in these writings.
Aquafortis engraving became their favourite process; and it was at this time that the vignettes of Walter Scott, of Cooper and of Byron appeared.
The buttons are polished in the lathe and thrown into a pan with a little amalgam of gold, and as much aquafortis diluted with water as will wet them all over.
A little aquafortis is rubbed on after the antimony, to quicken its operation.
But if colourless aquafortis and ordinary muriatic acid be mixed together, the mixture immediately becomes yellow, and acquires the power of dissolving these two noble metals.
Commercial aquafortis is very generally contaminated with sulphuric and muriatic acids, as also with alkaline sulphates and muriates.
Aquafortis is manufactured upon the great scale in iron pots or cylinders of the same construction as I have described under muriatic acid.
Mud mixed with vitrifiable sand in a great quantity, and which made but very little effervescence with aquafortis 3 0 4.
Hard marl, which made a very great effervescence with aquafortis 2 0 5.
Beech or birch, brushed with aquafortis in sweeping regular strokes, and immediately dried in front of a good fire, form very good imitations of old wood.
He was furious with himself, because his soul had seemed yesterday to be but a sham jewel, which a drop of aquafortis deprives of its colour and lustre, whereas a real jewel never loses either.
The best 'double aquafortis' of the shops (aquafortis duplex) has usually the sp.
A solution of forty parts of water to one part of aquafortis is better than a stronger one because the stones are more equally attacked.
It must be thin, and yet sufficiently thick to resist the aquafortis somewhat, so that it yields only at those places where the roughness of the cloth on the roller has removed it more or less.
This etching is done with pure aquafortis which in addition has a little alum mixed with it.
That this, however, is due mainly to the quality of the acid, I learned because I found that the same steel would be attacked clean and uniformly as soon as I obtained aquafortis from some other source.
If the test is satisfactory, make a raised border of wax around the stone and pour the aquafortis solution on it.
A stone grained for crayon work is prepared withaquafortis and gum.
If a few drops of aquafortis or other acid are poured on a clean ground stone, it will be etched.
Then the incorrect part is scraped or ground off as evenly as possible, the place prepared anew withaquafortis and gum, and the correction made with the steel needle.
A mixture of three or four parts of water with one part of aquafortis is painted over the stone with a soft brush of fox- or badger-hair.
It also is removed from the tone plate by washing with weak aquafortis and it yields very easily, because the paste lets go of the color readily.
Then the parts thus corrected are coated with a mixture of about six parts water, two parts gum, and one part aquafortis to prepare them anew.
When the plate has been cleansed thus of all surplus and blemishes, weak aquafortis is poured over it several times and then it is coated with gum.
The stone merely must be rubbed with acid-proof ink beforehand, that the necessary preparation of the corrected places with aquafortis or phosphoric acid and gum may not attack the rest of the design.
The instructions given here teach how to draw on a stone that has been prepared beforehand with aquafortis and gum.
The aquafortis did indeed "cure" the surface of his India-rubber, but only the surface.
A house in Paris made him an advantageous offer for the use of his aquafortis process.
He does not seem to have been aware that aquafortis is two fifths sulphuric acid.
Desiring to remove the bronze from a piece of the drapery, he applied aquafortis for the purpose, which did indeed have the effect desired, but it also discolored the fabric and appeared to spoil it.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "aquafortis" in a variety of sentences. We hope that you will now be able to make sentences using this word.
