136.1 Roger BACON. Opus majus. Ex MS. Codice Dubliniensi, cum aliis quibusdam collato, nunc primum edidit S. Jebb, M.D. 2° Londini: typis Gulielmi Bowyer 1733 Ferguson Nat Union Cat [Illustrations:- 1. Engraving inserted before page 67, "Clark sc". 346x237mm. Divided into 61 small rectangles mostly 38x33mm each containing a geometric figure, constructed principally of lines, arcs and circles. 2. Typeset table. 267x380mm. Astronomical table of days, on large inserted folio. 3. Engraving inserted after page 344. 375x235mm. Divided into 49 smaller rectangular areas within each of which is a geometric diagram, similar to the first engraving.]