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[81.] THEOR. 7. PROPOS. 8.
[82.] THEOR. 8. PROPOS. 9.
[83.] PROBL. 2. PROPOS. 10.
[84.] THEOR. 9. PROPOS. 11.
[85.] THEOR. 10. PROPOS. 52
[86.] SCHOLIVM.
[87.] THEOR. 11. PROPOS. 13.
[88.] COROLLARIVM.
[89.] THEOR. 12. PROPOS. 14.
[90.] THEOR. 13. PROPOS. 15.
[91.] THEOR. 14. PROPOS. 16.
[92.] THEOR. 15. PROPOS. 17.
[93.] THEOR. 16. PROPOS. 18.
[94.] COMMENTARIVS.
[95.] COMMENTARIVS.
[96.] COMMENTARIVS.
[97.] TERRAM, ET AQVAM ESSE ROTVNDAS.
[98.] COMMENTARIVS.
[99.] COMMENTARIVS.
[100.] COMMENTARIVS.
[101.] COMMENTARIVS.
[102.] COMMENTARIVS.
[103.] AN EX TERRA, ET AQVA VNVS FIAT GLO-bus, hoc eſt, an horum elementorum conuexæ ſuperficies idem habeant centrum.
[104.] TERRAM ESSE CENTRVM MVNDI.
[105.] COMMENTARIVS.
[106.] COMMENTARIVS.
[107.] COMMENTARIVS.
[108.] COMMENTARIVS.
[109.] COMMENTARIVS.
[110.] Omnes ſtellæ 4. magnit. Quartæ.