Cambridge, University Library, Mm. II. 18

Century	14
Previous owners	The Collector's name appears thus after the title of contents. 'Iste liber est Fratris Galfridi de Wyghtone quem fecit scribi de elemosinis amicorum suorum'. Thomas Knyvett has repeated his name and motto in several places through the volume, and records its price, 8s.4d.
Material	Membr.
Format	f
No. of leaves	334
Gatherings	Chiefly in quaterni of 12, but three contain only 10, one 7, and two 11 leaves.
Condition	One leaf has been cut out from one of these latter. The illuminated initials have been cut out of 222.
No. of columns	2 cols.
Lineation	63 lines.
Decorations	The first leaves of many of the sections are well illuminated.
Marginal annotations	The writing is very incorrect.
Printed catalogs	Hardwick & Luard, H.R., Catalogue of the Manuscripts preserved in the Library of the University of Cambridge IV (1861) 132-8 # 2313.
Source	Folkerts \| Hardwick & Luard IV (1861)
Type of source	cat. \| pvt. notes
Source’s source	insp.

Work 1	Title (ms.)	A Collection of Works, Mathematical and Classical, among them being:
Work 2	Additional names	Euclides
	Title (ms.)	Kommentar zu Euklid X \| Liber de Numeris et Lineis Rationalibus; Pulcher et Magnus
	Incipit	Cum quantitates adinvicem comparantus alie earum
	Printed catalogs	Singer, D.W., Hand-list of scientific mss. in the British Isles dating from before the sixteenth century # 195; cf. Transactions of the Bibliographical Society 15 (1917-9) 185-99.
	Facsimiles	Clagett, M., Medieval Mathematics, Physics and Philosophy: A Revised Catalogue of Photographic Reproductions, Manuscripta 2 (1958) 153.
	MF copies	Clagett, M., Medieval Mathematics and Physics: A Checklist of Microfilm Reproductions, Isis 44 (1953) 377.
	Item no.	2
	Folio no.	49-65
	Rubric	Liber de Numeris et Lineis Rationalibus; Pulcher et Magnus
	Explicit	usque in infinitum; et illud est quod demonstrare voluimus.
	T & K	TK 333
Work 3	Author (ms.)	Alchoarismus
	Author standard	Al-Khwarizmi \| Gerhard von Cremona
	Additional names	Mohammed Ben Musa Khwarizmi
	Title (ms.)	De Algebra et Almuchabala
	Incipit	Hic post laudem ... inquit Postquam illud quod ad computationem
	Printed catalogs	Singer, D.W., Hand-list of scientific mss. in the British Isles dating from before the sixteenth century # 173; cf. Transactions of the Bibliographical Society 15 (1917-9) 185-99.
	Additional remarks	Mohammed Ben Musa Khwarizmi was the first Arabic author of Algebra. See concerning him Biblioth. Arab. Hispan. Vol. I. p. 371, where the present work is named Algebrae et comparationum Epitome.
	Item no.	3
	Folio no.	65-9b
	Explicit	25 dragme, cujus radix est 5.
Work 4	Author (ms.)	Ababuchrus \| Girardus Cremonesis (tr.)
	Author standard	Abû Bekr
	Title (ms.)	Liber in quo Terrarum et Corporum continentur Mensurationes
	Incipit	Cum aliquis tibi dixerit, Est quadratum equilaterum
	Printed catalogs	Singer, D.W., Hand-list of scientific mss. in the British Isles dating from before the sixteenth century # 139; cf. Transactions of the Bibliographical Society 15 (1917-9) 185-99.
	Facsimiles	Clagett, M., Medieval Mathematics, Physics and Philosophy: A Revised Catalogue of Photographic Reproductions, Manuscripta 2 (1958) 135.
	Item no.	4
	Folio no.	69b-76b
	Rubric	Liber in quo Terrarum et Corporum continentur Mensurationes Ababuchri qui dicebatur heus; translatus a Magistro Girardo Cremonensi in Toleto: Abreviatus
	Explicit	et erit mensura magnitudinem ejus, et hec est ejus forma.
	Additional information	Possibly this may be the author named by D'Herbelot under Horsas who died the year of the Hegirah, 370. \| This work is not named in the list of Giraldus' translations.
Work 5	Author (ms.)	Saydus Abuohtim
	Author standard	Saydi Abuothmi
	Title (ms.)	De Mensuratione Figurarum Superficialium et Corporearum
	Incipit	Scias quod scientia figurarum superficialium
	Printed catalogs	Singer, D.W., Hand-list of scientific mss. in the British Isles dating from before the sixteenth century # 182; cf. Transactions of the Bibliographical Society 15 (1917-9) 185-99.
	Facsimiles	Clagett, M., Medieval Mathematics, Physics and Philosophy: A Revised Catalogue of Photographic Reproductions, Manuscripta 3 (1959) 33.
	MF copies	Clagett, M., Medieval Mathematics and Physics: A Checklist of Microfilm Reproductions, Isis 44 (1953) 380.
	Item no.	5
	Folio no.	76b-7a
	Rubric	Liber Saydi Abuohtim, De Mensuratione Figurarum Superficialium et Corporearum
	Explicit	omni contingunt quadrato.
	T & K	TK 1390
Work 6	Author (ms.)	Ademea
	Author standard	Aderameti
	Title (ms.)	De Mensuratione
	Incipit	Scias quod arec cujusque quadrati
	Facsimiles	Clagett, M., Medieval Mathematics, Physics and Philosophy: A Revised Catalogue of Photographic Reproductions, Manuscripta 2 (1958) 134.
	MF copies	Clagett, M., Medieval Mathematics and Physics: A Checklist of Microfilm Reproductions, Isis 44 (1953) 373.
	Item no.	6
	Folio no.	77
	Rubric	Liber Ademea de Mensuratione
	Explicit	quod ubi praevenerit, erit area ejus corporis.
	T & K	TK 1387
Work 7	Title (ms.)	Liber Augmenti et Diminucionis
	Contents	In ipso est capitulum de censibus, demum de negociacione, postea de donacionibus, demum de pomis, post de obviacione, demum de cambicione, postea de decenis et frumento et ordeo, demum de mercatis et ad ultimum de anulis.
	Incipit	Compilavi hunc librum secundum quod sapientes Indorum advenerunt
	Facsimiles	Clagett, M., Medieval Mathematics, Physics and Philosophy: A Revised Catalogue of Photographic Reproductions, Manuscripta 2 (1958) 134.
	MF copies	Clagett, M., Medieval Mathematics and Physics: A Checklist of Microfilm Reproductions, Isis 44 (1953) 373.
	Item no.	7
	Folio no.	77b-82b
	Rubric	Liber Augmenti et Diminucionis vocatus numeracio dimuacionis ex eo quod sapientes Indi posuerunt quem Habmam copulavit et secundum librum qui Indorum dictus est composuit
	Explicit	et alius tenebit rem tertiam.
	Additional texts	Here follows a list of the preceding works.
	T & K	TK 238