"Paragraph M8ag89-d1e68-d1e124" . . . . . . . . . . . . . . "4" . "Tractatus de magnete, Pars 2, Caput 1, Paragraph M8ag89-d1e68-d1e124" . . "2" . . "0002" . "M8ag89-d1e68-d1e124" . "draft" . . "0002" . . .