372 Dr. Boris's Description of an Arabic Celestial Globe. 



hiought with him from the Greek emperor himself, experienced much difli- 

 ciilty ill attaining the object of his journey. Georgius Chrysococces, a Greek 

 ])hysician of the middle of the fourteenth century, who was greatly attached 

 to astronomy, and to whom we shall frequently have occasion to refer in the 

 course of this essay, had derived his knowledge of this science from the works 

 of Chionides, of whose travels into Persia he givfis the following account : 



E'^EyE rolvouv ekeivoj (MavHriX) on Xiov/aJn; ti{ h KovtrTavTivxTToMi Tfaf ei; xai TravTuv h xaTaX)i\l<Ei 

 TM /xa^n/iaTuv yEvi/xevo; ti; Ejxuxa itiaiiiv xat ETEfaj ixa^wiui ita^JxTOu Ji Jj <roiplav Troflcrano xai 

 I'aTfiKiiv axfijSaJj B^airxrijciiv, iVeiJb Tra^k Tivuv iiKXJCv ij tt /til E15 IlEjuriJa aiputoiTO tS ttots/xevs 

 K Teiierai , •navtuv xaraip^oncai; n Tax"? ^'X^ '■'''! °^2 ei';^£to ' ei'j TfajTE^svTa Je ai{ iv TrofoJoi 

 EXSsiv xai Toi /x£7a^J) Ko/amvoi o/xiAnra; x^mu iriXKcv {uvxyov), cna xai ra ra TTfay/aaTOj xoivaad/xitiOi 

 ficyurtis w|itJ« xn^E/xovia; , ^o^^a yaj waf' e'keivs >M&m ava>.u/iaTa ti; rTEptriJas «f i'xeto Iv o^iVu Je m 

 nEfi(raiv 7rai?'Ei/9£'ir xai t? tstidv ^affiAE? o//iMi(7-a,- , ■TTfo/itiitiai te wap' fXEiVa TETt/xuxw; , eb'eiJ')] ra 

 T^i AVrpovOjUiaj lUanSa^Eiv e0i\ETO //.iv , xx Ei^a oe tov JiJalovra . No'iuo; yaf Jv nEfffi Ji Trarra ftiv 

 ra liaHiuna Toif PsXOftcvoii c^iTvai /iavdamv , avT^ovo/ucev Sc /uo'voi; toT( Xlc^uoi; . O' it tm atTiat 

 f^ETao-a; xai fia^m ioiav aval Tiva Tra^airiv tTrix^aTriaaaav waf ' awrci; i; ip^a^wcaBai tw exil- 

 vaiv 0a(Ti}\clav i/Tro I'u/taiuv tn te^i^ tS; 'AirTfOvo/ii'aj Xfic/tsvuv , Tta^ ' ineivuv TrpoTEfov ramiij 

 >ia0()VT£5 Taf dfoffiai , JitiTTOfErTo wois a'v tS tois'tk /lExax"' *'«'>» ' 0"/tai{ 7ro7^ ncix,^ri<Tas xai 5rlJ^^a 

 osAEiiira; tw iSaffiAE? rav riE/xTaiv /toVij tS ttoSb/xevs teto'^^uxe • Ilfoo-Tay^aTi yif ^jktiAik" toi{ 

 Jl3■a!(^Ka^0l{ ir</vayayiiv jv o'\i'yij liiya; £v IlEpff/Ji XioviaJnj iipalvtto , xai Ti/i«{ a^ikto |3aori^ix»{ , 

 X^fi/iata Je 7ro^^a <ruM,e^a/icyoi xau iroM.i>i)( vanxosi XTwanivoi i\( r'w TfaTTEfavra waAiv a./pUtto , 

 HoWa 0i0>.la iS T^; AVrfovo/i/a; fnaSriiiarof e^wv |1*«S ' esi/tS . O'lxela Se yvi/xti Tai/xa f|£>,^)iv/iraf 

 /MVfl/x)i; a^ici' Efyov Ewoi'ntTEV . E'ltri fiEv xoi EXEfa 0i0\la iris trvvja^euf twv Il(((ruv ain^ dujoi 

 iiihhmiiTt . 



" He (Manuel) told me that a certain Chionides, brought up in Constan- 

 tinople, and deeply versed in all the sciences, felt desirous to learn another 

 language, by which he might acquire wisdom, and improve himself in the prac- 

 tice of medicine ; and having understood from several Persians, that unless 

 he went to Persia he could never obtain his wishes, he laid aside all other 

 pursuits, and commenced the journey with all possible haste. On his way 

 he stopped at Trebizond, where he met the illustrious Commenus, with whom 

 he remained a considerable time ; and upon communicating to him his inten- 

 tion, was treated with the greatest kindness, and received from him ample 

 means for prosecuting his journey in safety to Persia. In a short period he 

 had made himself acquainted with all the sciences of the Persians, and had 

 frequent intercourse with their king, from whom he received much attention. 

 But when he sought to be instructed in astronomy he was not able to find a 

 teacher for that purpose ; a law existing in Persia which permitted every 

 one to study any science he might choose, but confined astronomy to the 



