Ontario. Dept. of Education · Toronto : W. Briggs · leaf 214
ry to suggest alevel supporting surface. For this purpose,when the object is l)elow the eye level, a tablehne which stands for the back edge of thesurface on which the object rests is usuallyadded and should be light enough to suggestthat it is at some distance from the object. Itshould not have… … -BY FORM in lG-1 Airr
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![An illustration from Geberis philosophi perspicacissimi, summa perfectionis magisterii in sua natura ex Bibliothecae Vaticanae exemplari undecunq[ue] : emendatissimo nuper edita, cum quorundam capituloru[m], vasorum, & fornacum, in uolumine aliàs mendosissimè impresso omissorum : libriq[ue] inuestigationis magisterij & testamenti eiusdem Geberis, ac Aurei triu[m] uerborum libelli et Auicennae summi medici & acutissimi philosophi mineralium additio[n]e castigatissima (1542)](https://img.insideoutlibrary.com/img/200/ia-geberisphilosoph00gebe-117-9.webp)
