Some obvious minor typographical errors have been corrected silently.
In several places where they were not present in the source document, blank lines have been inserted in order to distinguish notes from the previous description, or to emphasise the transition from one subject to the next.
Letters referring to elements in illustrations and characters representing shapes rather than letters have been standardised to sans-serif.
In several instances, ditto, do. and „ have been replaced with a repetition of the dittoed text.
Page 40: Eilipile has been changed to Eolipile.
Page 320: 75° has been changed to 75,