284 NOVUM ORGANUM 



as to the climate, soil, and depth at which each metal is 

 generated, and the same of gems, whether produced in rocks 

 or mines, also as to the soil in which particular trees, shrubs, 

 and herbs, mostly grow and, as it were, delight; and as to 

 the best species of manure, whether dung, chalk, sea sand, 

 or ashes, etc., and their different propriety and advantage 

 according to the variety of soils. So also the grafting and 

 setting of trees and plants (as regards the readiness of graft 

 ing one particular species on another) depends very much 

 upon harmony, and it would be amusing to try an experi 

 ment I have lately heard of, in grafting forest trees (garden 

 trees alone having hitherto been adopted), by which means 

 the leaves and fruit are enlarged, and the trees produce 

 more shade. The specific food of animals again should be 

 observed, as well as that which cannot be used. Thus the 

 carnivorous cannot be fed on herbs, for which reason the 

 order of feuilletans, the experiment having been made, 

 has nearly vanished; human nature being incapable of 

 supporting their regimen, although the human will has 

 more power over the bodily frame than that of other 

 animals. The different kinds of putrefaction from which 

 animals are generated should be noted. 



The harmony of principal bodies with those subordinate 

 to them (such indeed may be deemed those we have alluded 

 to above) are sufficiently manifest, to which may be added 

 those that exist between different bodies and their objects, 

 and, since these latter are more apparent, they may throw 

 great light when well observed and diligently examined 

 upon those which are more latent. 



The more internal harmony and aversion, or friendship 

 and enmity (for superstition and folly have rendered the 

 terms of sympathy and antipathy almost disgusting), have 



