Editing Roger Bacon (section)

===Other works===
[[File:Roger Bacon Wellcome M0004130.jpg|thumb|right|200px|A portrait of Roger Bacon from a 15th-century edition of ''{{lang|la|De Retardatione}}''<ref>MS Bodl. 211.</ref>]]
[[File:Roger Bacon page from book.jpg|right|200px|thumb|The first page of the letter from Bacon to {{nowrap|[[Pope Clement IV|Clement IV]]}} introducing his ''{{lang|la|Opus Tertium}}''{{sfnp|Brewer|1859|loc=[https://books.google.com/books?id=wMUKAAAAYAAJ&pg=PR9-IA6 Plate III]}}]]

Bacon states that his ''Lesser Work'' (''{{lang|la|Opus Minus}}'') and ''Third Work'' (''{{lang|la|Opus Tertium}}'') were originally intended as summaries of the ''{{lang|la|Opus Majus}}'' in case it was lost in transit.{{sfnp|Clegg|2003|p=[https://books.google.com/books?id=IiqeBAAAQBAJ&pg=PT66 66]}} [[Stewart C. Easton|Easton]]'s review of the texts suggests that they became separate works over the course of the laborious process of creating a [[Foul papers|fair copy]] of the ''{{lang|la|Opus Majus}}'', whose half-million words were copied by hand and apparently greatly revised at least once.{{sfnp|Clegg|2003|p=[https://books.google.com/books?id=IiqeBAAAQBAJ&pg=PT67 67]}}

Other works by Bacon include his "Tract on the Multiplication of Species" (''{{lang|la|Tractatus de Multiplicatione Specierum}}''),{{sfnp|Bacon|1897|p=[https://archive.org/stream/opusmajusofroger02bacouoft#page/404/mode/2up 405–552]}} "On Burning Lenses" (''{{lang|de|De Speculis Comburentibus}}''), the ''{{lang|la|Communia Naturalium}}'' and ''{{lang|la|Mathematica}}'', the "Compendium of the Study of Philosophy" and "of Theology" (''{{lang|la|Compendium Studii Philosophiae}}'' and ''{{lang|la|Theologiae}}''), and his ''Computus''.{{sfnp|''Stanford Encyclopedia of Philosophy''|2013|loc=§2}} The "Compendium of the Study of Theology", presumably written in the last years of his life, was an anticlimax: adding nothing new, it is principally devoted to the concerns of the 1260s.