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# Title: [Lectiones XVIII, Cantabrigiae in Scholis publicis habitae] Lectiones XVIII, Cantabrigiæ in Scholis publicis habitæ (shelfmarks Leibn. Marg. 0; ZEN Leibn. Marg. 0)
# Folio 19, page id 797435492:0039
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# Lines: 41 recognised, mean confidence 0.94
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L F. C Y.
Eeu quicquid retractio ad E efecit, id retractio ad R retexir, radium ii
Cacum restituens, ei quem ab origine habuit non disparem. Veriim
haecnon est hujus loci penitius excurere, Saltem obserrari meretux hoc
prxecipuum, uc arbitror, in prilmate Phaenomenon.
VIII. FIeC, inquam, cum ab experientia contirmentur, ne que tamen
cimagis, quam ratiociniis nostris consentiant, caulis tamen adscribun-
cur (a quibusdam) nedum direr(Is, at prorlus advertis. Ouod enim
ritrum c. 8. radios intra corpus luum receptos, ejusque poltica super-
ficiei obliquius incidentes rerrocedere cosat, hujusmodi rationem extri-
bent: aiint ritrum radios Facilius admutere, vel transinittere quarro
derem; quin addunt aerem ri reflectendi praeralida pollere; quodque
proinde qui post rierum adventanti radio tic obrius aer cum rererbe-
rat. Oux rario mihi non adblanditur. Iiam imprimis rei naturae mi-
nus consentanea videtur. Ouum enim aeris corpus ex aethere puro
maximam parrem, ccorpusculiscerrenis. e ex tralitibus aqueis con-
Ptare totum videatur; ex his partibus ather, opinor, non minus
prompee quam rierum radios transnitti; aqua vero Paltem (ex illo-
rum, quibuscum disputamus, sencentia) taneillo difticilius; adeoque
neutiquam harum alcerurri dicta reffectio jure videtur actribuenda;
terrestres autem particulae (qux prx reliquis etiam pauciores videntur,
ec rarius intersperlae, praelertim in aëre sudo lummisque montium ex-
cellorum jugis) sunt opacae, nec lucem admittune, ast cam in omni-
curque pariter incidentia rejiciune, adeo ut nec ad has quam respici-
mus lucis inflectio proprie spectet; ergo nihil subesse videtur caulae, cur
der (Prae vitro) ingruenti luci porentius oblistar. Addo; litalis aeri vis
reflexira competat, _ vera (II, quam hi Philosophi memorato PHX-
nomeno caulam adsignant. consequi videtur, ut nulla prope HIorizon
tem Scella conspici polsu (admislo Caltem hoc, non inverecundo reor,
ut plerisque rilum erit, poltulato; quod purus FTher, naturale lucis
vehiculum, acrex regioni luprajectus haud minus Facile quam virrum
aut aqua radios inEROMIEEEF.) Sit enII C FCPEX CenErUI, O OculuS,
Srilibile punctum longinquum, ceu stella, litum in IIorizonte; per P15. 140
punctavero C, O. S crajectum concipiatur planum Faciens in FerEX su
verticie circulum OP; in aemospliarx, vel aeris circumtuls, extima
superficie circumterentiam Z NIM; icaque cum radius quilibet, ue
SM, vel SN (Hlorizontalis puta, vel eo superior) in superticiem ML.
cadens ei incidat perquam oblique (nils laltem armolphaera Semidi-
aMeter C.Z prxe telluris Semidiamerro CO dicatur enormirer, ec in-
credibilicer masna) cum ec aex ideirco, juxta senrentia qua ex-
pendimus