C 1891 ) 
TahuU Generalis ConJiruBio <^ U/m. 
lit Planetse in Orbibus EUipticis, ita Cometx in Para-, 
bolicis Solem in Foco communi fit urn ambiunt 5 ea lege ut 
Areseaequales ^equalibus temporibus defcribantur. Quoni- 
am vero Parabote oiunes inter fe fimiles funt, fi determi- 
nata aliqua pars Avtx dat^ Parabola dividatur in partes 
quotlibet^ in omnibus Parabolic fiet fimilis divifio Tub 
iifdem angulis , atque diftantte eriint proportionales : 
ideo^ue una^noftra Tabula pro Cometis omnibus fufSciet, 
Calculi autem hujus Tabiilse hsec eft ratio. In Schemate 
fit S Sol, P O C orbita Cometh, P Perihelion. O Lo- 
cus ubi Cometa quadrante diftat- a PcriheliO;^ C Locus 
quivis alius. 
Junge CP, 
C ac fiant 
ST, SR X- 
qnales ipfi 
isreftis CR, R q S p ' T 
C T(quarum hxcCinvx Tangeiis eft, ilia perpendicularis) 
in axem P S Rdemitte norraalerii CQ^ Jam data quavis 
Are?^ COPS, oportet angulum CSP, & diftaotiam C S 
inquirere, Quoniiim ob oaturaai Parabola refta RQ: 
iibique a^qualis eft femilateri redo, ponatur latus reftum 
2^ adeoque R Q. — i : ac fit refta CQ_ = ^ erit itaque 
PQ^"^ i '^■'Z.^iic Segnientum parabolicumCO P ~ j^z^zz, 
T riaogulum autem C S P erit = i ^ adeoque Area mix- 
tilinea CO P S erit % s 4- z — ac 5S 3 4- 35:.=^ 
12 a. Quare reioluta hie aequatione Cubica, z fi^e 
orciinatim applicata CQJnnotefcet. Prjoponatur jam Area 
OPS ill partes eencenas dividenda; haec Area duodecinia 
pars eft qaadrati iateris refts, adeoque 12 a a^quantur 
Quadrate illo 4 : SI itaque fucceflive extrabantur ra- 
dices .^quiiiunum 2:» 3 + 3, 2S ^ O5O4 : OjCS : O5I2 : 0,16 
8cc. 
