[51.] COMMENTARIVS.
[52.] COMMENTARIVS.
[53.] COMMENTARIVS,
[54.] DENVMERO ORBIVM CAELESTIVM.
[55.] DE MOTIBVS ORBIVM CÆLESTIVM.
[56.] DEPERIODIS MOTVVM CÆLESTIVM.
[57.] QVOMODO DEPREHENSVM SIT OMNES cælos ſimpliciter ab ortu in occaſum moueri.
[58.] QVA RATIONE COLLECTVS SIT MOTVS Cælorum ab occaſu in ortum.
[59.] QVA INDVSTRIA CAELOS INFERIORES ab Occaſu in Ortum ſuper diuerſos polos à polis mundi moueri obſeruatum ſit.
[60.] PROPTER QV AE PHAENOMENA ASTROMI motum trepidationis ſtellis fixis attribuerint.
[61.] DE ORDINE SPÆRARVM CÆLESTIVM.
[62.] COELVM MOVERI AB ORTV IN OCCASVM.
[63.] COMMENTARIVS.
[64.] COMMENTARIVS.
[65.] COELVM ESSE FIGVRÆ SPHÆRICÆ.
[66.] COMMENT ARIVS,
[67.] COMMENTARIVS.
[68.] DE FIGVRIS ISOPERIMETRIS. DEFINITIONES. I.
[69.] II.
[70.] III.
[71.] IIII.
[72.] V.
[73.] THEOR. 1. PROPOS. 1.
[74.] THEOR. 2. PROPOS. 2.
[75.] THEOR. 3. PROPOS. 3.
[76.] THEOR. 4. PROPOS. 4.
[77.] THEOR. 5. PROPOS. 5.
[78.] THEOR. 6. PROPOS. 6.
[79.] THEOR. 1. PROPOS. 7.
[80.] SCHOLIVM.