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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis (shelfmarks Leibn. Marg. 100:1/2, Stück 2; Leibn. Marg. 100:1/2)
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lL G F B R A.
Cap.
vertice) aequaliter crelcentbus. Ouod nocum et, d communiter receptum.
26. Si Relistentia Aerts hic in considerationem reniac: pro lingulis his pro-
grectionibus aequalibus, substimenda erit progressio Gconetrica decrelcens, ad
cundem modu (e Propter caldem causas) ue in linea Projectionis.
27. Flinc oritur, pro primo momento =; pro secundo
in mei pro cerrio = +  +  _c. FF propierea calis
erit Descensus Corporis oraris Tua praritate cadentis. Sup.
Polico linsulos Graritatis Impultus inter se aequales csle.
28. FToc est (in A9. 2.) uE FL, FM, F N, _cc. in linca
Descentus, correspondentis ipsis FL, L. M, M B ecc. in linea
Pxojectionis.
29. Ac, quamris progrectiones illae pro linea Projectionis,
m m m sint Similes hisce lingulis pro linea Delcentus: non tamen inde
Ec. . _c.
concludendum eric  in una aqualem ette ipsi= in alcera:
Sed in linea Projectionis (pura) =f (calis pars impresta Vis, ee Celexiracis huic
correspondencis:) in linea Descentus,  s (calis pars Impulsus à Gravicate
oriundi.)
30. Ila quidem in linea Descensus (ejuldem Corporis) aequales sune inter se
omnes; E0 quod s (novus impulsus à Graricate) supponitur in lingulis mo-
mentis idem leu aequipollens.
3T. Ouxe autem lic proportio iptius f ad 8 (hoc est, imprestae Vis ad Grarica.
eis impullum in lingulis corporibus) restat experimento inguirendum.
32. Proportio haec ubi comperta fuerit pro una aliqua nora Vi: cadem inde
habebitur pro Vi quaris alia (cujus ad hanc Rario cst coenita) in eodem Uni-
formi Medio.
33. Atque hac coonica pro uno Medio; cadem inde cognolcetur pro alio
quoris, cujus Resistentia ad. Rehistentiam hujus Rationem habeat nocam.
34. Si corpus Grare Deortum Vi projiciatur in recta Perpendiculari, Descensus
ejus (secundum hanc hypochesin) erit in ratione
(Vis imprestae,) auctis iptis
3 c. iptius f
m m mo t im + ime + mo ecc. iplius e (impul.
sus d Graritate,) Per S7; _527. E0 quod uraque vires sint hic conjuncta.
35. Si lic perpendicularis projectio Surtum: Ascensus erit in rarione priore.
dempra polteriore. Ouoniam impultus craricatis est hic concrarius imprella
36. Adeoque quum primum hic impulsis posterior (continne crescens) priori
(concinue décrescenci) aequalis tac; desinie Ascentus; indeque Descenditur in
ea ratione qua posterior impecus priorem luperat.
37. In projectione Horizoncali, aut etiam Obliqua: Si rectae Tanseni cujus
inerementa sunc ut P L, F M, FH, Sc. hoc clt, uc = f _c. applicenur Ordi-
naEX (in angulo inclinationi coneruO) cujus incremema sint itE FL, FM,
FH, _c. hoc cst u  S SC. Curra quae motui sic compotico convenit, ca est
secundum quam censendum est Projectum moveri.
38. HIXC Curra (hactenus innominis) rocetur Linea Projectorum (uvore
secundum quam Projecta moveri censenda crunt,) quae Parabolam, sed deforma
tam, remuletur. Cujus Latus Rectum variabitur pro varia ratione f adt 
30. Celericas e Fendencia (seu Directio) pro singulis Currae punctis, deter-
minacur ticu recta Fansentis in illo puncto.
40. Maxi.