NOVUM ORGANUM. 119 



rejection of natures found by the tables of review, not to 

 be of the form of heat ; first premising that not only each 

 table is sufficient for the rejection of any nature, but even 

 each single instance contained in them. For it is clear from 

 what has been said that every contradictory instance des 

 troys an hypothesis as to the form. Still, however, for 

 the sake of clearness, and in order to show more plainly the 

 use of the tables, we redouble or repeat the exclusive. 



An Example of the exclusive Table or of the Rejection of 

 Matures from the Form of Heat. 



1. On account of the sun s rays reject elementary (or 

 terrestrial) nature. 



2. On account of common fire, and particularly subter 

 ranean fires (which are the most remote and secluded from 

 the rays of the heavenly bodies), reject celestial nature. 



3. On account of the heat acquired by every description 

 of substances (as minerals, vegetables, the external parts of 

 animals, water, oil, air, &c.) by mere approximation to the 

 fire or any warm body, reject all variety and delicate tex 

 ture of bodies. 



4. On account of iron and ignited metals, which warm 

 other bodies, and yet neither lose their weight nor sub 

 stance, reject the imparting or mixing of the substance of 

 the heating body. 



5. On account of boiling water and air, and also those 

 metals and other solid bodies which are heated, but not to 

 ignition, or red heat, reject flame or light. 



6. On account of the rays of the moon and other hea 

 venly bodies (except the sun), again reject flame or light. 



7. On account of the comparison between red-hot iron 

 and the flame of spirits of wine (for the iron is more hot and 

 less bright, whilst the flame of spirits of wine is more bright 

 and less hot), again reject flame and light. 



8. On account of gold and other ignited metals, which 

 are of the greatest specific density, reject rarity. 



9. On account of air, which is generally found to be cold 

 and yet continues rare, reject rarity. 



10. On account of ignited iron,* which does not swell in 

 bulk, but retains the same apparent dimension, reject the 

 absolute expansive motion of the whole. 



11. On account of the expansion of the air in thermo 

 meters, and the like, which is absolutely moved and ex 

 panded to the eye, and yet .acquires no manifest increase 



* This is erroneous : all metals expand considerably when heated. 



