SEC. FAB. CUPIDINIS ET CCELI. 315 



que universum coelum motu circular! ferri, nee ullam 

 ejus partem hujus motus expertem esse ; sed tamen 

 quemadmodum et in calore et in luce et raritate coeli 

 versatur inaequalitas, ita et in motu eandem notari ; 

 adeoque magis insigniter, quia observationem humanam 

 magis lacessit et sustinet, ut etiam calculos pati possit. 1 

 Motum autem oi bicularem et incitatione differre posse 

 et latione ; incitatione, 2 ut sit celerior aut tardior ; la- 

 tione, ut sit in circulo perfecto, aut aliquid habeat spiras 

 neque se plane restituat ad eundem terminum (nam 

 linea spiralis ex circulo et recta composita est). Ita- 

 que haec ipsa coelo accidere, varietatem nempe incita- 

 tionis, et deflexionem a restitutione, sive spiralitatem. 3 

 Nam et stelhe inerrantes et planetas impariter p rope- 

 rant; et planetae evidenter a tropico in tropicum deflec- 

 tunt ; atque quo sublimioi-a coelestia sunt, eo et ma- 

 jorem incitationem sortiuntur, et propiorem spiram. 

 Nam si phenomena simpliciter atque ut conspiciuntur 

 accipiantur, et ponatur motus diurnus unus naturalis 

 et simplex in coelestibus, et formositas ilia mathematics 

 (ut motus reducantur ad circulos perfectos) contemna- 

 tur, et recipiantur linese spirales, et contrarietates illa3 



circular! assidue commotus motu molem cui penitus infixus est . . secum 

 agit.&quot; De Rer. Nat. i. 2. The motions of the heavens and their construc 

 tion he afterwards seeks to explain on teleological grounds which Bacon 

 does not notice, but which are a prominent part of Telesius s system. See 

 De Rer. Nat. i. 9. 10., and comp. the physiological speculations in the sixth 

 book. 



1 Telesius does not attempt to connect the inequality of heat with that 

 of motion, declaring &quot; non modum, quo qualis est, constrtictus sit mnn- 

 dus, sed cur ita construendus fuerit, et cur quibus ccelum -movetur moti- 

 bus iis moveri oportuerit, inquirendum esse.&quot; Ib. i. 9. 



2 In the original et is repeated before incitatione. J. S. 



8 Telesius says that the special hypotheses of astronomy are foreign to 

 his purpose; his leaning is however in favour of the doctrine here ascribed 

 to him, and which we know from Tassoni was adopted by his disciples. 

 See the preface to the Descriptio Globi Intellect, and De Rer. Nat., ubi mode. 



