LIB. II. 48. 313 



alii alios tempore et celeritate praevertunt ; alii alios 

 fovent, roborant, ampliant, accelerant. 



Motus antitypicK omnino est adamantinus et invinci- 

 bilis. Utrum vero motus nexus sit invincibilis, adhuc 

 hoeremus. Neque enim pro certo affirmaverimus, 

 utrum cletur vacuum, sive coacervatum, sive permis- 

 tum 2 . At de illo nobis constat, rationem illam, pro- 

 pter quam introductum est vacuum a Leucippo, et 

 Democrito 3 , (videlicet quod absque eo non possent ea- 

 dem corpora complecti et implere majora et minora 

 spatia) falsam esse. Est enim plane plica materice, 

 complicantis et replicantis se per spatia inter certos 

 fines absque interpositione vacui : neque est in ae re, 

 ex vacuo, bis millies (tantum enim esse oportet) plus 

 quam in auro. Id quod ex potentissimis corporum 

 pneumaticorum virtutibus, (qua? aliter tanquam pulve- 

 res minuti natarent in vacuo) et multis aliis demon- 

 strationibus, nobis satis liquet. Reliqui vero motus 

 regunt et reguntur invicem, pro rationibus vigoris, 

 quanti, incitationis, ejaculationis, necnon turn auxilio- 

 rum, turn impedimentorum, quse occurrunt. 



Exempli gratia ; magnes armatus nonnullus detinet 

 et suspendit ferrum ad sexagecuplum pondus ipsius ; 

 eo usque dominatur motus congregationis minoris, su 

 per motum congregationis majoris ; quod si majus fu- 

 erit pondus, succumbit. Vectis tanti roboris sublevabit 

 tantum pondus ; eo usque dominatur motus libertatis 

 super motum congregationis majoris ; sin majus fuerit 



2 Bacon here seems to have sus- former, air mingled with powdered 



pected that the ordinary notion of a substances, and by the latter, air in 



Vacuum was unfounded. But what bulk as it lies around and upon 



does he mean by &quot; Vacuum sive such substances. I have ventured 



coacervatum sive permistum ? &quot; to translate it &quot; Vacuum, either en- 



Below, II. 50, he speaks of &quot; Aer tire or partial.&quot; 



permistus&quot; and &quot; aer coacervatus 3 See supra, I. 51. 

 et circumfusus,&quot; meaning, by the 



