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course of nature, and expanded and exalted to new efficients 

 and new modes of operation, except by the revelation and 

 invention of forms of this nature. But after this 3a union of 

 nature, which is the principal point, we will afterward, in 

 its proper place, treat of the divisions and ramifications of 

 nature, whether ordinary or internal and more real. 



XYII1. We must now offer an example of the exclusion 

 or 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 de 

 stroys a 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 Natures 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, etc.) by mere approximation to the 

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

 of bodies. 



32 I.e., the common link or form which connects the various kinds of natures, 

 such as the different hot or red natures enumerated above. See Aphorism iiu 

 part 2. 



