Errata: Correct them as follows.

Page 4, line 1, read scientiis. In line 3, æquum. In line 4, delete earum. In line 6, read museorū. In line 9, machinarum rationem spectat. In line 11, delete hoc modo and write ita. In line 19, read si adfit. In the declaration of the 2nd, line 3, read perpendiculariter. In line 6, read siue.
In the declaration of the 3rd, line 6, read fuerit. In line 7, firmitudinem. In line 10, quorum. In D. 4, line 6, read eandem. In D. 6, line 5, delete quæ.
In D. 7, line 2, read eminent. In Decl. 9, line 2, read intelligantur. In D. 10, in the last line, read recedit, pellit politorem. In Proposition 11, line 1, read campanæ, in line 2, aquarum. In D. 13, line 5, read habet. In D. 14, line 4, latrelabus, line 6, bipartitam, line 8, fixo. P. 15, ferendo oneri. P. 17, line 1, read vastius. P. 18, line 1, read liquores. P. 19, line 2, read exhauritur.
D. 19, line 2, read Hanc. Line 3, delete r flexæ, in column 1, in singulas. Line 4, gratia. P. 20, line 1, dimouendis. D. 20, cui liber. Line 3, apparentia inseruiunt. P. 21, line 1, lapidem. P. 24, line 1, qua. P. 25, line 1, primendos, terenda. Line 2, ferri quæuis. D. 25, line 1, rota, operationum.
D. 26, line 2, rota grand., line 5, funes, line 9, qui si qui. P. 27, line 1, depromitur. D. 28, line 4, Hæc autem, line 5, tympani. D. 30, line 4, lineam, line 7, attrahentibus. P. 31, carros, quorum. D. 31, line 8, trispasto, line 9, estque. D. 32, line 1, delete & ipso, line 3, plus inest, line 7, vbi torni ipsi fuerint. P. 34, Artificium. D. 34, line 9, iidemque, line 10, delete quoque, read partem. D. 36, line 3, cardine nititur (and read thus in others p cardini), line 6, possint ista brachia quæ. D. 37, line 6, longam. P. 39, apta. D. 39, line 3, duo tigna, trispastus. D. 40, line 6, ille, line 9, 14. p., line 15, 2. m., line 16, cogit æquipondium, line 20, seratur. D. 42, line 3, bipartitum, and imponitur liber & in. D. 44, line 3, voluitur etiam, line 11, mouentur, line 13, innitente. P. 46, certam. D. 47, line 14, impletur. D. 48, line 10, 1. 14. pellit, line 16, firmitudinem. D. 49, line 4, delete cathenæ, line 5, illi cathenæ, line 6, cogitur. D. 50, line 8, opposite fixi. D. 51, line 7, quilibet. D. 52, line 1, coni. P. 54, line 1, trispastu, line 3, coniunctis. D. 56, line 9, meridiem 1. m. porticam. P. 58, extrahendæ. D. 60, line 2, compaginis inferioris, line 5, delete atque, read vt hi, line 6, emittatur & fiat rhom:. Correct the rest according to your kindness, and if I have expressed some things in poor Latin, excuse it, for

The subject matter itself refuses to be adorned, being content to be taught.