150 NOVUM ORGANUM 



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 heav 

 enly 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, while 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, 33 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 thermome 

 ters and the like, which is absolutely moved and expanded 

 to the eye, and yet acquires no manifest increase of heat, 

 again reject absolute or expansive motion of the whole. 



12. On account of the ready application of heat to all 

 substances without any destruction or remarkable altera 

 tion of them, reject destructive nature or the violent com 

 munication of any new nature. 



13. On account of the agreement and conformity of the 

 effects produced by cold and heat, reject both expansive and 

 contracting motion as regards the whole. 



33 This is erroneous all metals expand considerably when heated. 



