NOVUM OltGANUM. 133 



we anticipate, and which rouse our attention, are more 

 easily remembered than transient events ; as if you read 

 any work twenty times over, you will not learn it by heart 

 so readily, as if you were to read it but ten times, trying 

 each time to repeat it, and when your memory fails you 

 looking into the book. There are, therefore, six lesser 

 forms, as it were, of things which assist the memory : 

 namely, 1. The separation of infinity. 2. The connexion 

 of the mind with the senses. 3. The impression in strong 

 passion. 4. The impression on the mind when pure. 5. 

 The multitude of handles. 6. Anticipation. 



Again, for example s sake, let the required nature be 

 taste or the power of tasting. The following instances are 

 constitutive: 1. Those who do not smell, but are deprived 

 by nature of that sense, do not perceive or distinguish 

 rancid or putrid food by their taste; nor garlic from roses, 

 and the like. 2. Again, those whose nostrils are obstructed 

 by accident (such as a cold) do not distinguish any putrid 

 or rancid matter from any thing sprinkled with rose water. 

 3. If those who suffer from a cold blow their noses violently 

 at the very moment in which they have any thing foetid or 

 perfumed in their mouth, or on their palate, they instantly 

 have a clear perception of the fcetor or perfume. These in 

 stances afford and constitute this species or division of 

 taste : namely, that it is in part nothing else than an in 

 ternal smelling passing and descending through the upper 

 passages of the nostrils to the mouth and palate. But, on 

 the other hand, those whose power of smelling is deficient, 

 or obstructed, perceive what is salt, sweet, pungent, acid, 

 rough, and bitter, and the like, as well as any one else : so 

 that the taste is clearly something compounded of the in 

 ternal smelling, and an exquisite species of touch which we 

 will not here discuss. 



Again, as another example, let the required nature be the 

 communication of quality, without intermixture of sub 

 stance. The instance of light will afford or constitute one 

 species of communication, heat and the magnet another. 

 For the communication of light is momentary and imme 

 diately arrested upon the removal of the original light. 

 But heat and the magnetic force when once transmitted to, 

 or excited in another body, remain fixed for a considerable 

 time after the removal of the source. 



In fine the prerogative of constitutive instances is consi 

 derable, for they materially assist the definitions (especially 

 in detail) and the divisions or partitions of natures, con- 



