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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 62, page id 797435492:0102
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183
18.85.
P E C F. VTII.
NIR, RZ; S incidentinm ANI, A R, A Z reReri GH, HR, IX
axi occurrane producti punctis R, L, M; erit interrallum M L ab
obliquiorum occurlibus conclutum majus ipso L. R. rectiorum occu: I-
Dus intercepto.
Nam quoniam est A N g. I. AZ gE 2 AR9. erit 2 AC9
=AH9 = AX 9= 32 A C 9 = 2 A R 9. adeoque AC9-
A22G. AC9 - AR9 = AC9- ARg. AC9- A19.
hocest, e praemonstraris, CL. CM 1CK. CL; vel inverse
CM. CLL CL. CR. QuaPEOPTEK exIE CM L CR. L 2CL.
 ideo CM = C. L C. CL - CR hoC est ML L LR:
D. F. D.
ZVIII. Hinc constat, etiam inhachypothesi, rectius incidentem
lucem a refectione maxis inspillari; Peu spatio versus limirem Z arcti-
ore constringi.
XIX. Ouin ab his demum omnibus colligitur, s uspiam in aXe
velur ad 0) constituatur oculi centrum, quod punctum A necessa-
rio circa limirem Z apparebit. Erenim (prorlus ut in praecedence
quoad radios ab infinire dissito puncto mananres hupotheli) ab axis
illi puncto adjacenre parre radii cum copioliores, cum axi viciniores,
oculoque rectiores, etticacia proinde prxpollentes, nec non qui
Faciliisre aduneneur, provenire videntur. qua nempe cuncta simul
ac emersentem propolici consequentiam abunde, puro, dedimus
enueleara. Succedie ut hac parte detuncti pro visu extra radiationis
arem collocato itidem imaginis sedem detiniamus. veruncamen hXeC,
quanquam haud it a quantitate multa, pro reiramen obscuritare For-
callis nimia ridebuntur. iraque jam opporcurum aurumo defistere.