[91.] PROP. XXII. THEOREMA.

[92.] SCHOLIUM.

[93.] PROP. XXIII. THEOREMA.

[94.] PROP. XXIV. THEOREMA.

[95.] PROP. XXV. THEOREMA.

[96.] PROP. XXVI. THEOREMA.

[97.] PROP. XXVII. THEOREMA.

[98.] PROP. XXVIII. THEOREMA.

[99.] PROP. XXIX. PROBLEMA. Dato circulo æquale invenire quadratum.

[100.] PROP. XXX. PROBLEMA. Ex dato ſinu invenire arcum.

[101.] PROP. XXXI. PROBLEMA. Ex dato arcu invenire ſinum.

[102.] PROP. XXXII. PROBLEMA. Invenire quadratum æquale ſpatio hyperbolico con-tento à curva hyperbolica, uno aſymptoto & dua-bus rectis alteri aſymptoto parallelis; quod ſpatium æquale eſt ſectori hyperbolico cujus baſis eſt eadem curva.

[103.] PROP. XXXIII. PROBLEMA. Propoſiti cujuscunque numeri logorithmum invenire.

[104.] SCHOLIUM.

[105.] PROP. XXXIV. PROBLEMA. Ex dato logorithmo invenire ejus numerum.

[106.] Tom. II. Mmm

[107.] PROP. XXXV. PROBLEMA. Rectâ per datum punctum in diametro ductâ, ſemicirculum in ratione data dividere.

[108.] SCHOLIUM.

[109.] FINIS.

[110.] II. HUGENII OBSERVATIONES IN LIBRUM JACOBI GREGORII, DE VERA CIRCULI ET HYPERBOLÆ QUADRATURA.

[111.] III. DOMINI GREGORII RESPONSUM AD ANIMADVERSIONES DOMINI HUGENII, IN EJUS LIBRUM, DE VERA CIRCULI ET HYPERBOLÆ QUADRATURA.

[112.] PROP. X. PROBLEMA.

[113.] Tom. II. Nnn

[114.] CONSECTARIUM.

[115.] IV. EXCERPTA EX LITERIS Dni. HUGENII DE RESPONSO, QUOD Dnus. GREGORIUS DEDIT AD EXAMEN LIBRI, CUI TITULUS EST, VERA CIRCULI ET HYPERBOLÆ QUADRATURA.

[116.] V. EXCERPTA EX EPISTOLA D. JACOBI GREGORII, CONTINENTE QUASDAM EJUS CONSIDERATIO-NES, SUPER EPISTOLA D. HUGENII, IMPRESSA IN VINDICATIONEM EXAMINIS SUI LIBRI, DE VERA CIRCULI ET HY-PERBOLÆ QUADRATURA.

[117.] FINIS.

[118.] CHRISTIANI HUGENII GEOMETRICA VARIA. Tom. II. Ppp

[119.] I. CONSTRUCTIO LOCI AD HYPERBOLAM PER ASYMPTOTOS.

[120.] DEMONSTRATIO.