NOVUM ORGANUM. 



the sake of clearness, and that the use of the Tables may be shown 

 more distinctly, we sometimes double or repeat an exclusion. 



Example of Exclusion or Rejection of Natures from the Form of 



Heat. 



1. By the Sun s Rays, reject elementary Nature. 



2. By Common Fire, and especially by Subterraneous Fire (which 

 is most remote, and most completely cut off from the Rays of heavenly 

 Bodies), reject heavenly Nature. 



3. By the heating of all kinds of Bodies (i.e., minerals, vegetables, 

 outer parts of animals, water, oil, air, and the rest) on mere approxi 

 mation to a fire, or other hot body, reject all variety or more subtle 

 texture of bodies. 



4. By Ignited Iron and other Metals which heat other bodies, and 

 yet are not at all diminished in weight or substance, reject \\\z commu 

 nication or admixture of the substance of another hot body. 



5. By boiling Water and Air, and even by Metals and other solid 

 Bodies when heated, but not to the point of ignition or red heat, reject 

 light and illumination. 



6. By the Rays of the Moon and other luminaries (except the Sun), 

 reject also light and illumination. 



7. By the Comparison of Ignited Iron, and the Flame of Spirit of 

 Wine (of which ignited iron has more heat and less light, and the 

 flame of spirit of wine more light and less heat), reject also light and 

 illumination. 



8. By Ignited Gold and other Metals which are most dense, when 

 taken as a whole, reject rarity. 



9. By Air, which is found for the most part to be cold, and yet 

 remains rare, also reject rarity. 



10. By Ignited Iron, which does not expand in bulk, but remains 

 within the same visible dimensions, reject also local or expansive 

 motion in the whole. 



11. By the dilatation of Air in heat-glasses and the like, wherein it 

 manifestly moves locally and expansively, and yet acquires no sensible 

 increase of heat, reject also local or expansive motion of the whole as 

 a body. 



12. By the facility with which all Bodies are heated without any 

 destruction or remarkable alteration, reject a destructive Nature, or 

 the violent communication of any new Nature. 



13. By the agreement and conformity of the similar effects produced 

 by Heat and Cold, reject both expansive and contractile motion in the 

 whole. 



14. By the kindling of Heat from the attrition of bodies, reject*. 

 principal Nature ; and by principal Nature we mean that which is found 

 to exist positively in Nature, and is not caused by a preceding Nature. 



There are also other Natures ; for the Tables which we construct 

 are not perfect, but only examples. 



All and each of the aforesaid Natures are not of the Form of Heat j 

 and from all of them man is freed when operating on heat. 



