"Black lead" Quotes from Famous Books
 ... fusible than soda glass, but has the disagreeable property of growing black in a few seconds unless worked in a strong oxidizing flame. This may be prevented by using a "hissing" flame, with a large excess of air, and working in the extreme end of the flame; or the black lead formed may thus be reoxidized, and the glass ...
— Laboratory Manual of Glass-Blowing • Francis C. Frary
... file to depths required, which must be so as to allow a playing card to slip comfortably under the E string when taut, a little more space for the other three being necessary, especially the G. Rub a black lead pencil through the cuts, and work them very smooth with a thin, round piece of steel, which makes all the strings much easier to slide afterwards and ...
— Violin Making - 'The Strad' Library, No. IX. • Walter H. Mayson
... Mickle, the translator of The Lusiad[539], and I went to visit him at this place a few days afterwards. He was not at home; but having a curiosity to see his apartment, we went in and found curious scraps of descriptions of animals, scrawled upon the wall with a black lead pencil[540]. ...
— Life Of Johnson, Vol. 2 • Boswell, Edited by Birkbeck Hill
... said to be black lead in the country of San Fernando, near San Pedro [now Los Angeles County]. By washing the sand in a plate, any person can obtain from one dollar to five dollars per day of gold that brings seventeen dollars per ounce in Boston; the gold has ...
— The Great Events by Famous Historians, Vol. 17 • Charles Francis Horne
... foot of the lake, and by Seatoller is fourteen miles from Keswick. Taking the vale of Newlands by the way, the distance is much less. In the vicinity of Seatoller is the celebrated mine of plumbago, or black lead. "It has been worked at intervals for upwards of two centuries; but, being now less productive, the ore has been excavated for several years consecutively. This is the only mine of the kind in England, ...
— Rides on Railways • Samuel Sidney
... flowers, ferns, leaves, feathers, insects, and lizards, can be prettily coated with bronze or copper, not to speak of gold and silver, by a similar process. They are too delicate to be coated with black lead in order to receive the skin of metal, but they can be dipped in solutions, leaving a film which can be reduced to gold or silver. For instance, they may be soaked in an alcoholic solution of nitrate of silver, made by shaking 2 parts of the crystals in 100 parts of ...
— The Story Of Electricity • John Munro |
