"Paragraph M8ag89-d1e68-d1e311" . . . . . . . . . . . . . . "4" . "Tractatus de magnete, Pars 2, Caput 2, Paragraph M8ag89-d1e68-d1e311" . . "6" . . "0001" . "M8ag89-d1e68-d1e311" . "draft" . . "0006" . . .