Workman had to do toward their continuance in that posture, was, to contrive so to fasten them, as that no force of wind or tempest, nor any other (unless extreme) violence, by diminishing the gravity on one side, might incline or sway them to sink down on the other; which could not otherwise be effected, but by corroborating the Aequilibrium by Tenons made in the Supporters, and let into holes or Morteses in the Architrave, no kind of Morter or Cement being strong enough for that purpose. And thus much common reason might teach the Masons, without any great skill in Geometry, or hav∣ing recourse to either the Rules or Patterns of Roman Architecture. Which, perhaps, was the cause why Vitruvius spake so little of this way of confirming great stones in buildings, as taking it for granted, the contrivement was so plain and obvious to men, even of but com∣mon understanding, as that it was needless for him to insist upon any Precepts concerning it: For, all I can meet with in his whole Vo∣lume, relating thereunto, is onely a slight, transitory, and obscure touch, (lib. 2. cap. 8.) which is this, Quod si quis noluerit in id vitium incidere, medio cavo servato secundùm Orthostratas intrinse∣cus, ex rubro saxo quadrato, aut ex testa, aut silicibus ordinariis, struat bipedales parietes, & cum ansis ferreis, & plumbo frontes vinctae sint: it a enim non acervatim, sed ordine structum opus poterit esse sine vitio sempiternum, quòd cubilia & coagmenta eorum inter se se∣dentia, & juncturis alligata non protrudent opus, ne{que} Orthostratas inter se religatos labi patientur. From whence nevertheless little can be col∣lected, that is capable of application to the manner of banding stones together in our Antiquity: all that is, we must be beholding to the indu∣stry of Philander for, who, after his interpretation of the word Or∣thostratae, which signifies upright Props, such as the Italians term Speroni, Philastri contraforti, addeth, Inciduntur in his canales, in quos, veluti in foeminas, aliud quidpiam, ceu masculum, ineat com∣mittatur{que}: cujusmodi sunt, quas nostri Mortesias, quasi Mordesias, à mordendo, vocant; commissurae scilicet genus, cum perpetuo canali induntur, inserunturvè tabulae, aut quippiam simile. Besides, though Mr Jones alleged the authority of Leo Baptistá Albertus, the Florentine, to prove, that in mighty Structures, where the stones were of extraordinary greatness, the Romans used to lay them without any unctuous incorporating Matter between: yet he neither hath, nor could bring under the hand of any Author a Certificate, that no other Nation did the like before, or until after the Romans had, by Con∣quest, or Commerce, civiliz'd them. And, therefore, it was some∣what