PKEFACE 



TO THE 



INQUISITIO LEGITIMA DE MOTU. 



BY the last paragraph of the Coyitata et Visa we 

 learn that that work was intended for a preface to cer- 

 tain u Tables of Discovery, or Formulae of Legitimate 

 Investigation," which were to be set forth in a few sub- 

 jects as a specimen of the work in hand. Ante omnia 

 visum est ei Tabulas Inveniendi sive leyitimce inquisitionis 

 formulas, hoc est materiem particularium ad opus intel- 

 lectus ordinatam, in aliquibus subjectis proponi, tanquam 

 ad exemplum et operis desoriptionemfere visibilem. 



In the Commentaries Solutus (July 26. 1608), among 

 other memoranda relating to the progress of the work, 

 I find the following : " The finishing the 3 Tables, De 

 Motu, De Galore et Frigore, De Sono." 



Now in Gruter's volume, among the Impetus Phil- 

 osophici, I find a Latin fragment entitled Filum Laby- 

 rinthi, sive Inquisitio legitima de Motu; in Stephens's 

 second collection, I find an English piece entitled 

 Sequela chartarum, sive Inquisitio legitima de Galore et 

 Friyore ; in Rawley's Opuscula I find a Latin fragment 

 entitled Historia et Inquisitio prima, de Sono et auditu, 

 et de forma Soni, et latente processu Soni ; sive Sylva 

 Soni et auditus. 



