Manufacturer and builder 7, 1878
The constituents of all Indian Inks, whatever the quality, are simply carbon. It is manufactured in hundreds of places, here and abroad. Its commercial value is exceedingly variable, depending on quality and on the methods of manufacture; we do not believe that there is any standard at all in this business. To grind the carbon to an impalpable fineness a Wedgewood mortar is utterly unfit for the purpose; but there are mills made for this work, which it is important to use, at the value of the ink depends greatly on the tine division of the material, which is often ivory-black or bone-black. But if you want to obtain, without much labor, a very finely-divided carbon, use lampblack. If any of the different qualities of lampblack in the trade do not possess the right kind of black shade to suit you, make it yourself by letting the smoky flame of any combustible material rich in carbon burn against a cool body — say a revolving metallic cylinder, which will soon he covered with a coat of black. We have in this way produced small quantities of very superior blacks. In order to mix it with water ton paste you have first to rub it with alcohol, as from its extreme lightness, (the result of the very fine division of the particles), it will not mix well with water, and always floats on the top of it. As for treating large quantitles alcohol in too expensive; sulphuric acid maybe used, and afterward removed by repeated washing with water. The finest of all substances which can be used for this purpose is, we suppose, anilin black, and we have not the least doubt that the finest India ink can be made of it when mixed with the proper small quantity of mucilage, so as to hold it together. We find anilin black to be the most intense and darkest black, far surpassing anything we have ever used.
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