London, Royal College of Physicians, 384.

Old shelfmarks	263 (on f.1)
Short title	Astrologica
Century	15 \| 16
Language	English \| Latin
Material	Chart.
Height × width	308 x 220 mm.
No. of leaves	112
Numbering	ff. orig. in red on both recto and verso 1-86, 1-26
Gatherings	1-4^12 5^14 6-7^12, with catchwords on each verso and often on rectos also
Binding leaves	i + 112 + i
Condition	Limp parchment binding, s.20.
No. of hands	1 \| A mixed but mainly secretary script.
Width of columns	245 x 165 mm.
Lineation	56 long lines
Initials etc.	3-line metallic red initials
Printed catalogs	Ker I (1969) 212-5.
Source	Ker
Type of source	cat.
Source’s source	insp.

Work 1	Title (ms.)	Sixteen questions
	Contents	Sixteen questions, the first on the cause of thunder and lightning and the last on the vapour from which shooting stars are made, whether it is substantial or accidental.
	Incipit	The phylosofyr saith in a boke <th>t he makith of heuyn and <th>e worlde
	Folio no.	1-3
	Blank leaves	3v
Work 2	Title (ms.)	Iudicia herfordens' mult' bona et utilia
	Incipit	After the Chesyng of significatours it is necessary the chesynge of howsis
	Folio no.	4-6
	Explicit	is for to be chosen.
	Colophon	Explicit Iudicia herfordens' mult' bona et vtilia
	Additional copies	The latin original, "Post eleccionem significatoris necessaria est... est eligenda." is GLonB Royal 12 F XVII, 3-4v; Sloane 1713, 15-18v
Work 3	Title (ms.)	The boke of thententes of secretis of Astronomye
	Contents	12 chapters
	Incipit	When the sciens of sterris to the beholder
	Date & place	1405
	Folio no.	6-9v
	Colophon	Here endyth <th>e boke of thententes of secretis of Astronomy wretyn a W. H. the <3>ere of our lorde 1405 con lyncolne.
Work 4	Title (ms.)	Twelve considerations
	Incipit	Of these thingis forsoth <th>t belongen to judicials of sterris for to be had in mynde these 6 arne for to ben considred
	Folio no.	9v-13
	Explicit	which come not of hem self.
Work 5	Title (ms.)	A tretise of the wysest phylosopher how eueryche of the planetis
	Incipit	Here begynneth a tretise of the wysest phylosopher how eueryche of the planetis beynge in his naturall strength
	Folio no.	14-15r,13v,15v-25v
	Colophon	Explicit.
	Tables	Introduction; tables, the first "Saturne vppon Iupiter" (13v).
Work 6	Title (ms.)	The partyes of the yere
	Incipit	In knowyng of the partyes of the yere if thingis shalbe dere
	Folio no.	25v
	Explicit	and shall destroye.
	Colophon	Explicit.
Work 7	Title (ms.)	Off the parte of water in many thingis
	Folio no.	25v-26
	Explicit	effect of our entent.
	Colophon	Explicit.
Work 8	Author standard	Haly
	Title (ms.)	The bemys of planetis
	Incipit	Satur<n>us in Aries beygne vnder <th>e bemys
	Folio no.	26r-v,27v-28
	Rubric	Here bygynneth haly off and vnder <th>e bemys of planetis.
	Colophon	Explicit haly de subradiis.
	T & K	TK (Saturnus in ariete...)
Work 9	Author standard	Hermes
	Title (ms.)	A tracte to discerne vryne
	Incipit	Hermes the fadyr of pholosophirs saith <th>t <th>er is no wise leche
	Folio no.	27
	Rubric	A tracte to discerne vryne. what it is. not seen.
	Blank leaves	The scribe left some blank spaces.
	T & K	TK (Dixit Hermes pater philosophorum...)
Work 10	Author standard	Messahala
	Title (ms.)	Epystell in thingis of eclipsis (inc.)
	Incipit	For asmuche as almyghty godde hath made hevyn and erth ...
	Folio no.	28-30
	Rubric	In the name of godd here bygynneth <th>e Epystell of Messahala In thingis of eclipsis
	T & K	TK (Quia prima causa...)
Work 11	Title (ms.)	Times for journeys
	Incipit	Thys chapter is of eloccion of tyme to euery man to begynne his jorney
	Folio no.	30v-36v
	Rubric	For Iorneys.
	Explicit	in eleccions and in significacions.
	Colophon	Explicit.
Work 12	Author (ms.)	Albumysar
	Author standard	Albumasar
	Title (ms.)	De revolucionibus annorum mundi \| The boke of revolicions of yeris of the worlde
	Incipit	Albu said know <th>u <th>e houre of <th>e entrige
	Folio no.	37-48
	Rubric	Here bygynneth the boke of albumyzar of reuolicions of yeris of <th>e worlde.
	Explicit	and de<th>e of women.
	Colophon	Explicit albumysar de reuolucionibus annorum mundi.
	Math. drawings	(43v) a rota of zodiacal signs
	Blank leaves	43r
	T & K	TK (Dixit Albumazar. Dato horam...)
Work 13	Author standard	Johannes de Sacrobosco
	Title (ms.)	The tretes of the Spere
	Incipit	After philosophyrs and doctours <th>t trete of the spere they deuyde this tretye of the spere in 4 chapiturs
	Folio no.	48-54
	Rubric	The tretes of the Spere.
	Explicit	machina of <th>e worlde was breken or dissolued etc.
	T & K	TK (Tractatum de sphera...)
Work 14	Title (ms.)	In how many maner an astronomyer may arre
	Incipit	Here mayst <th>u know in how many maner an astronomyer may arre in 4 maner thingis
	Folio no.	54-56v
	Explicit	he shall dye.
Work 15	Title (ms.)	Sygnes of the zodiake
	Incipit	Aryes is <th>e fyrst sygne of <th>e zodiake and it is hotte and drye
	Additional remarks	57v is written the wrong way up
	Folio no.	57-59v
	Explicit	or to suche o<th>er thingis.
	Colophon	Explicit 12 signa.
	T & K	TK (Aries est signum...)
Work 16	Title (ms.)	Figurs of 12 signs
	Incipit	The signe of Aries is like a ramme
	Folio no.	60-61
	Rubric	Here bygynneth <th>e figurs of 12 signs.
	Explicit	be experience etc.
	Colophon	Explicit.
	T & K	TK (Figura arietis...)
Work 17	Title (ms.)	Of nativites
	Incipit	Profitith 'hym' not after <th>t dresse
	Additional remarks	Divided into chapters (14 ?), but only some are numbered.
	Folio no.	61v-70
	Rubric	Of natiuites.
	Explicit	he shall breke his mouthe.
	Colophon	Explicit.
Work 18	Author (ms.)	Haly Benragell \| Haly Benregell
	Author standard	Haly Abenragel
	Title (ms.)	Nativities
	Incipit	This chapter is of natiuites of childer taken out of haly benragell the wise phylozphir
	Folio no.	70-72
	Rubric	Haly Benregell of nat'.
	Explicit	5 gres for <th>en apperinge.
Work 19	Title (ms.)	Canon de sole (inc.)
	Incipit	To know and to finde the mene mote
	Folio no.	72-74v
	Rubric	Canon de sole
	Explicit	Canon de luna...
	T & K	TK (Medius motus solis...)
Work 20	Title (ms.)	For to knowe the state of a seke man
	Incipit	This chapter is of knowinge of <th>e state of a seke man
	Folio no.	75-78
	Rubric	For to knowe <th>e state of a seke man.
Work 21	Author (ms.)	Ysaak Alkyndy
	Author standard	Alkindus
	Title (ms.)	The boke of domes of revolutions of the yeris of the world
	Incipit	As I had loked and seyn of <blank> of planetis I fonde Mercur'
	Folio no.	78-85
	Explicit	and snowe in wynter.
	Colophon	Explicit liber iste.
	Other passages	(83v) I haue wryten these thingis of the boke of domes of reuolucions of <th>e yeris of <th>e world <th>e whiche Iacob <th>e sone of Ysaak Alkyndy compyled. of the booke <th>t was translate out of ebrewe into Latyn be henr' bate'.
Work 22	Author (ms.)	Ypocras
	Author standard	Hippocrates
	Title (ms.)	The boke of dethe and liffe
	Incipit	This is the boke of ypocras. in this boke he techith for to knowe by planet sekenessis liffe and de<th>e
	Folio no.	85-86
	Colophon	Here endith <th>e boke of ypocras of de<th>e and liffe translate of astronomyers <th>e best <th>t euyr were fownde Explicit.
Work 23	Title (ms.)	For to fynde the 7 planetis
	Incipit	For to fynde the vij planetis
	Folio no.	86
	Tables	(86v) a table headed "Planetarum aspectus ad lunam", with prognostics in thirty compartments
Work 24	Author (ms.)	Iohon of Mownte Riol
	Author standard	Johannes Regiomontanus
	Title (ms.)	Introduction to the Effemerides
	Incipit	We shal shortly manifest and shew the vse of euery effymeridis
	Folio no.	87r-v
	Rubric	The effemeridis of Iohon of Mownte Riol <th>e souereyn bewte of germyns prince of astronomyers takith fortunately his principil and bygynnyng.
	Explicit	And to othir ciuyle and necessarie vsus innumerabyl.
Work 25	Author (ms.)	Bartilmew mariensuess slesita of pascua
	Author standard	Bartholomew Mariensuess
	Additional names	Regiomontanus
	Title (ms.)	Exposition of the Effemerides of Regiomontanus
	Incipit	Right nobil and most curtesse astate my lorde I required an exposycion to you to be made of effemeridis or almanak otherwise callid Tacuinum
	Printed copies	L. Hain, Repertorium Bibliographicum # 10770.
	Folio no.	87v-93
	Dedication	To the right highe and curtesse astate my lord ladyslaw and zschimahy of boskotz etc. Bartilmew mariensuess slesita of pascua maister of arte and docto^r of physik greting.
	Explicit	manifest speculacion and practice of astronomye.
	Colophon	Laudes deo.
	T & K	TK
Work 26	Title (ms.)	De septem planetis
	Contents	(93v) Erthe is <th>e centre; (94v) Now folow^t a voluel <th>t sume clepen an almerye; Now go we to our eclipsis; De septem planetis. Vndirstand <th>er be vij planetis
	Incipit	After space for a table; This forsaid tabil is callid tabula lune
	Folio no.	93-94
Work 27	Title (ms.)	De septem climatibus mundi
	Contents	... A clime is a space of the erth ...; (96v) There <th>u seest in the forsaid whele ij letters togeder ...
	Incipit	Clima est spacium terre
	Folio no.	95-
	Rubric	De septem climatibus mundi
	Other passages	(95v) "Nicolaus Triuet vpon bois" is quoted on the seven climes.
Work 28	Title (ms.)	The namys of the 12 signs and planetis in ebrew
	Contents	... (101v) miscownted thorow vnstable and besy mynde in so much that I had no felow w^t me to a comforted and refreshed my witt ...
	Date & place	1470
	Folio no.	98v-
	Rubric	The namys of the 12 signs and planetis in ebrew is
	Explicit	Therefor I wil not besy me to loke whether I haue even cownted or not.
	Other passages	(98) The writer says that the number of years since Christ is 1470 "in which we be now <th>e dai of this writinge".
Work 29	Title (ms.)	De iudiciis vrine non vise
	Incipit	Saturnus in corpore humana
	Folio no.	99-100
	Rubric	De iudiciis vrine non vise.
	Explicit	u<e>l breuem.
	Blank leaves	100v
Work 30	Author standard	Ptolemaeus
	Title (ms.)	De significacionibus 7 planetarum
	Incipit	De saturno. Saturnus cum fuerit in ascendente
	Folio no.	102-103v
	Rubric	Incipit liber ptholomei de significacionibus
	Explicit	sunt Mercurius et luna.
	T & K	TK
Work 31	Author standard	Zael
	Title (ms.)	Significaciones planetarum per signa secundum
	Incipit	Saturnus cum fuerit in signis hominum
	Folio no.	103v
	Rubric	Incipit liber Zael. Incipiunt significaciones planetarum per signa secundum zael philosophum.
	Explicit	tibi et cetera
Work 32	Author standard	Zael
	Title (ms.)	Liber de coniunccionibus
	Incipit	Coniunccio est quando due planete mergentur in eodem signo
	Folio no.	103v-104
	Rubric	Liber zael de coniunccionibus.
	Explicit	in coniuntione cum Ioue.
Work 33	Title (ms.)	Luminaria firmamenti
	Incipit	Luminaria firmamenti sunt multa inter que
	Folio no.	104-107v
	Additional copies	Note the same piece as LonB Add. 41600 referred to by TK.
Work 34	Author standard	Ptolemaeus
	Title (ms.)	Liber de natiuitatibus hominum
	Incipit	Iste liber de signis omnium hominum
	Incipit 2	Cum volueris scire ascendentia nativitatum
	Folio no.	108-110v
	Rubric	Incipit liber protholomei de natiuitatibus hominum.
	Explicit	fortunatus in omni colore excepto in nigro.
Work 35	Title (ms.)	Forma de noua instrument' Nauicula
	Incipit	In hoc instrumento due figure zodiaci
	Folio no.	111
	Rubric	Forma de noua instrument' Nauicula dicto pro horis equalibus vbicunque in tota terra inueniendis.
	Explicit	longissima dies.
	T & K	TK
Work 36	Author standard	Messahala
	Title (ms.)	De racione celi et stallarum
	Incipit	Deus altissimus fecit celum et terram ad similitudinem spere
	Folio no.	111v-112
	Rubric	Dicit messahala de racione celi et stellarum et qualiter operantur in mundo.
	T & K	TK (Quia dominus altissimus...)
Work 37	Title (ms.)	Tabulatus 12 signorum
	Incipit	Aries calidus et siccus Masculum diurnum
	Folio no.	112rv
	Rubric	Tabulatus 12 signorum.
Work 38	Title (ms.)	De dominatore rei
	Incipit	Cum scire volueris dominatorem rei
	Additional remarks	7 lines
	Folio no.	112v
	Rubric	De dominatore rei s'
Work 39	Author standard	Bethemius
	Title (ms.)	Centilogium
	Contents	The first 31 dicta only
	Incipit	Scias quod quando planete sunt retrogradi sunt ut vbi infirmus
	Printed copies	Ed. Basel 1551 (after Julius Firmicus) # 2-32.
	Folio no.	112v
	Rubric	Centilogium.
	Explicit	rei interogate.
	T & K	TK