NOVUM ORGANUM. 



6. All Flame. 



7. Ignited Solids. 



8. Natural Warm Baths. 



9. Boiling or Heated Liquids. 



10. Glowing Vapours and Smoke, and Air itself, which admits of a 

 most intense and raging heat if confined, as in reverberator ies. 



1 1. Any Seasons which are fair through the constitution of the air, 

 without taking into account the time of year. 



12. Air confined under the earth in certain caverns, especially in 

 winter. 



13. All hairy Substances, as wool, skins of animals, and plumage, 

 have some heat. 



14. All Bodies, solid as well as liquid, dense as well as rare (such 

 as air itself), brought near the fire for a time. 



15. Sparks struck from flint and steel by strong percussion. 



16. All Bodies strongly rubbed, as stone, wood, cloth, c. ; so that 

 poles of carriages and axles sometimes catch fire ; and the usual way 

 in which the West Indians kindled fire was by rubbing. 



17. Green and damp Herbs, shut up and packed together, as roses 

 and peas in baskets ; so that hay, if it be stacked when damp, often 

 takes fire. 



1 8. Ouick-limc slaked with water. 



19. Iron when it is first dissolved by aqua fortis in glass, and that 

 without putting it by the fire ; and tin and other things in like man 

 ner, but not so intensely. 



20. Animals especially, and always internally ; although in insects 

 the heat is not perceptible to the touch, on account of the smallness 

 of their bodies. 



21. Horse-dung, and the recent excrements of animals. 



22. Strong Oil of Sulphur and Vitriol produce the result of heat in 

 burning linen. 



23. Oil of Marjoram, and the like, produce the result of heat in 

 burning the bony parts of the teeth. 



24. Strong and well-rectified Spirit of Wine exhibits the property 

 of heat ; so that if white of eggs be thrown into it, it coagulates and 

 becomes white, as it does when boiled : bread thrown into it becomes 

 dried and crusted, as it does when toasted. 



25. Aromatic Substances and warm Plants, as the Dracunculus, the 

 old Nasturtium, c., although they are not warm to the hand, either 

 when applied whole or in powder, yet when slightly chewed appear 

 warm, and after a fashion scorching, to the tongue and palate. 



26. Strong Vinegar and all acids cause a pain in a member where 

 there is no skin ; as the eye, or the tongue ; or in any part that is 

 wounded and stripped of its skin, differing but little from that induced 

 by heat. 



27. Also sharp and intense Cold induces a certain sense of 

 burning : 



Nam Boreae penetrabile frigus admit. 



28. Other Instances. 



