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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)
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ADDENVa
Pa5. 23, l. 20, 568. post subjiciuneur, Adde
EE quidem, supposica circuli quadeacura, quae hic supponieur
quadrabim Figura quaeliber in suxerticie Sphaerae circulorum quo-
rumvis (Ere maximorum sive minorum) arcubus corminata. Duod
Quamvis non sic hujus loci Fusius prolequi, paucis camen olten-
dam. Nam L. Pone Aouram hanc quamcunque in Trilinea Sphe-
rica circulorum peripheriis dirimi, manifeltum elt. 2. Trilinca
haec s Iinc vera Sphaerica Priangula (circulorum maximorum ar
CADUS FERMINACA) daca PunE: Duippe, uc Excectus quo angulorum
in Triangulo Sphaerico aggregarum superac duos rectos, ad duos
rectos; lic Triangulum illua, ad Circulum in Sphaera maximum.
3. Siquod vero Trilineorum non sc cale Triangulum Spharicum;
habecur camen illius a Sphaerico Friangulo, iisdem punctis anou-
laribus cerminco, difterencia, habicis Bilineis qua circulorum ina-
rimi _ minoris arcubus conterminis interjcineur. 4. Habetur
aure hujusmodi Bilineu, h incelliganeur ab exeremis arcus circuli
minoris ad polum suum duci duos arcus circuli maximi: Dui, cum
arcu illo circuli minoris, continebune Trilineum TPosceles, cujus
maenieudinem hic (568.) exhibemus; lidemque, cum contermino
aecu circuli miximi, continene Triangulum Sphaericum; Quorum
difterencia, est Bilineum quasicum. Adeoque, Suppositâ circult
guadratura quadrabitur ficura quaelibet in superficie Sphara circu-
torum quorumvis arcubus terminata; non minus quam; in Plano,
Figura rectilinea. Duodnos, ni Fallor, primi docemus.
Pac. 90. l. 20. post hactenus. Adde
Conchoiars. FR autem e maona, incer Conchoidem e Crcloidem, conve-
nienria. ResumPEa eni, gue es Fpist. 39. Commercii Epistolici
p. 267, fgura; Manifeltum est, rectam M D, Sinum esse anguli
MCD, ad radium C A; _ rectam HIO, hOc CH (PFCPTCEPA-
rallelas) CHI, ejusdem aneuli Tansencem, ad radium PC. UF
igicur Ordinacim applicata in C veloide, est Sinus es Arcus, ejus-
demanculi, Aegrecarum, (ejusdem circuli, in Primaria; Ped, in
Secundariis, diversorum:) Sic, in Conchoide, Oordinacimapplicaca
elt Aerrecarum Sinus es Tangentis, ejusdem anguli; (e quidem
ejusdem circuli in Primaria, 2i2. ubi PC = C A; sed diversorum
in aliis:) Duod nos, quod sciam, primi deregimus.
 AueC POIIOCOIBimUS, uruE Conchoidis Planum OACHI.
 CaC IICa sIC magmicudinis, esse camen Soli-
de
Ficurae in
superficie
Spharisa
218. 36
Cor choidis
Solidum.