Its physical and chemical properties have been the subject of much study, and have a special interest in view of the extraordinary difference between the physical characters of the diamond and those of graphite (blacklead) or charcoal, with which it is chemically identical, and into which it can be converted by the action of heat or electricity. [Please select]
I know blacklead attracts the concentration of the sun. [Please select]
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Gerald had a note-book, with leaves of the shiny kind which you have to write on, not with a blacklead pencil, but with an ivory thing with a point of real lead. [Please select]
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This was, of course, a joke, but it preyed on Billy's mind, and at next inspection he had the geese whitewashed and their legs and bills blackleaded. [Please select]
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