The superhero medium is so staid that temporary exposure to a black lead is considered groundbreaking.
Now, suppose you exchange boats, and pull round once more, that we may see how much good the black lead did.
In the vicinity of Seatoller is the celebrated mine of plumbago, or black lead.
They are then colored with a mixture of red chalk, or black lead, applied with a sponge, to give the gold a dark color.
But black lead is far handsomer than anything else for this purpose.
Even the black lead of pencils possibly represents plants that were once alive on this globe.
Associated with these beds of hard coal are beds of black lead, or graphite, the substance used in making "lead" pencils.
There is a little iron mixed with our black lead but nothing to hinder its crystallisation.
The most common solid employed as a lubricant is graphite, sometimes termed “plumbago” or “black lead.”
The last stage in the coal series is a black substance which we know as black lead, or graphite.