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# Title: [Johannis Wallisii SS. Th. D. Geometriae Professoris Saviliani Oxoniae, Tractatus Duo] Johannis Wallisii SS. Th. D. Geometriæ Professoris Saviliani Oxoniæ, Tractatus Duo (shelfmark Leibn. Marg. 103)
# Folio 68, page id 85138403X:0076
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DE CYCLOTDF
Satur per maenicudinem eranslocatx pareis divita, unde nabeacue
MENTUCA PFOIOCIONIS cenEri GraVIcatIS quancum ad A F rectaM;
hujusque semissis, distantia urique ejusdem centri a Bb, in can-
dem magnicudinem irorum mulciplicata; prodibie Dividui se-
missIs, nempe sE- D= P2 =-=D=, momentum iltius cranlocata
partis, bilineo BC insistentis, respectu rectae BB.
7T. Deinde, super criangulo CBb rectilineo, incumbit cy-
lindri quadrancalis porrio, cujus balis CbC quadrans circuli, al-
cicudo Bb = Z F; momencum vero ejusdem respectu rectae BB
elt 6D= D =, E D P2. Ouod eodem modo colligieur quo su-
Pra ( 35 e (C99.) Colligitur momentum ejusmodi porcionis
FXoGZ A3. 5. Cum enim illica 39 haDetuE , ZD = =, Z9Y, 3∞
momenei ausmentum (ob dicte portionis ibidem cranctationem
respectu recta F A (Enempe incelligacur Y F A planum hori
zonei parallelum) vel rectae Fe (siscilicet planum Y F p hori
zonti parallelum incelligatur:) Adeoque ejuldem lemistis + SD
250D
portioris dictae momentum respectu rectae Y2 vel
Zu (prout haec vel illa incelligatur horizonri Parallela,) POsca
quidem (quod illic supponitur) segmenti alcirudine Yv= = D
LInde, Si Posier fuisset LV P (ProuE jam in casu cimili suxPO-
nimus super aequalem balem porcionis alcicudinem Bb + P
fuisset ejusdem MOIenEM respectu reSX YZ vel YV, S D. 
 si= D= PZ. Ouod igitur est momentum porcionis Cylindri qua
drantalis, criangulo C B b incumbentis, respectu rectae LB
fg. 7.
72. Torius aurem Cxlindri quadrancalis, parallelogrammo
BC incumbentis, momencu respectu ejusdem Bb rectae, elt : D. p
6qDP2, 2D2
p. Undes auferatur cum momencum Colidi bi-
lineo BC insictentis, si2 D. P2 =22 D+ (∞70;) cum, C∞. 
st=D=p2 (7) momentum porcionis semicplindri crianeulo
CBbincumbentis; hoc elt, 3D P-  D momentum Colidi co-
eius erilineo micto CBb incumbentis; manebic,  DL momencum
respectu ejuidem B b rectxe) Solidi insiltentis crilineo misto BCC
H9. 7. nempe solidi ex omnibus VZ.X2 Y Ag. 7. uod 65 propo-
nitur inquirendum.
7SLHaBIEO: PrOPEeE cuM AF A9. 20. duplam rectae c C
15.7. ad eoque e L. V f9. 10. duplas rectarum VL Fio. 7. tum V: D
218, 7, 23