The Great Art (1545) - Page 12

Chapter	Description	Folio
XXIII.	On the cube, squares original: "quadratis," the unknown $x^2$, and a number equal to things original: "rebus," the linear unknown $x$, in general.	fol. 44
XXIIII.	On the 44 derivative chapters.	fol. 44
XXV.	On imperfect and particular chapters.	fol. 46
XXVI.	On unique major rules.	fol. 49
XXVII.	On the transition from one particular chapter to another particular chapter.	fol. 50
XXVIII.	On operations with pronic original: "pronicarum," from the Greek word for "oblong," referring to roots of the form $n(x^2+x)$ (or mixed) and allellar original: "allellarum," referring to reciprocal or mutual relationships between roots roots.	fol. 51
XXIX.	On the Rule of Mode.	fol. 52
XXX.	On the Golden Rule original: "regula aurea," a high-level algebraic method, not to be confused with the "Rule of Three" in arithmetic.	fol. 53
XXXI.	On the Great Rule.	fol. 54
XXXII.	On the Rule of Equal Position.	fol. 56
XXXIII.	On the Rule of Unequal Position or Proportion.	fol. 57
XXXIIII.	On the Rule of the Mean.	fol. 59
XXXV.	On the double rule of the aggregate.	fol. 60
XXXVI.	On the Rule of Free Position.	fol. 64
XXXVII.	On the triple rule of False Position original: "falsum ponendi," a method for solving equations by assuming a false value and then correcting the resulting error.	fol. 65
XXXVIII.	On the double rule by which parts are eliminated through multiplication.	fol. 66
XXXIX.	On the double rule by which we find the unknown quantity through repeated position, where there are 20 other general chapters for squares of squares original: "q̄d'q̄d'," an abbreviation for "quadratum quadrati," representing $x^4$, squares, things, and numbers.	fol. 72
XL.	On the methods of general suppositions belonging to the Great Art, and rules which are extraordinary, yet involve other types of solutions original: "æstimationibus," the values or roots of the unknown of a different kind from those already mentioned.	fol. 79

Correct certain errors as follows.

Folio 5, verso, line 28: read "6 squares plus 3."
Folio 8, verso, last line: "the remaining."
Folio 9, verso, line 34: "surface."