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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 208, page id 1677894601:0400
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(20E
Fxponi autem poslunt hae Auxiones per C urrarum
Ordinatas BD, BF BF, BC, BHI, Sc. UI S
Ordinata BF (=  +DB
)Et quantitas Auens, erit
ejus Auxio prima ut ordinata BD. Si BF (= AF B.
Eit quantitas Auens, erit ejus Auxio prima ut Or-
dinata BF X Auxio secunda ut Ordinata BD. Si
BII (=
) sic quantitas Auens, erunt ejus Auxio
C
nes, prima, secunda, tertia _ quarta, ut Ordinatae
BC, BF, BF, BD respectire.
Et hinc in aequationibus quae quantitates tantum
duas incognitas involrunt, quarum una est quan-
titas uniformiter Auens et altera est Auxio quaelibet
quantitatis alterius Auentis, inveniri potest Auens
illa altera per quadEatUTAI CUErATUII. FXPONatUE
enim Auxio ejus per Ordinatam BD, X Si haeC SIE
duxio pria, quaeratUE area ADB =- BF X I, B
AuXiO leCuNdA, QUaeTATUE aECA AE B = =BFX L, (
Duxio tertia, GuaTatUE AECA A FB = = BGX I, XC.
e area inventa erit exponens Auentis quaesLX.
Sed et in aequationibus quae Auentem _ ejus
Duxionem primam sine altera Auence, vel duas
ejusdem Auentis duxiones, primam ec secundam,
vel secundam e tertiam, vel tertiam e quartam,
XC. line alterutra Auente involrunt: inreniri pol-
Tunt Aventes per quadraturam Currarum. Sit
aequatio dar = aV -  WV, existente v = BF,
v = BD, = = = AB ec 2 = = T, _ aequatio illa COm
plendo dimentiones Auxionum, eradet aav == aV2
2d2
~YZ, SCu or F or =2. Jam Auat r’ unitormiter de
1