XXVI. Notice of the fusion of plumbago, or graphite, (commonly called black lead,) in a letter from Professor Silliman to ProfessorRobert Hare, M.D. Dated March 26, 1823
"XXVI. Notice of the fusion of plumbago, or graphite, (commonly called black lead,) in a letter from Professor Silliman to ProfessorRobert Hare, M.D. Dated March 26, 1823." The Philosophical Magazine 62.304 (1823) 124-130