On the occasion of C. W. Scheele's 200th anniversary of death corrections and complements to some of his important investigations and theories including discussions of priorities, are given to elucidate his works and to avoid misunderstanding (element term; tartaric, oxalic and benzoic acid; pyrolusit; earths/spar/Bologneese luminous stone/barite; Scheele/Bergman/Lavoisier; fire theory/discovery of oxygen; graphite/Wolfram; Scheele/Wenzel).