LIB. II. 20. 197 



nitio vera caloris (ejus, qui est in ordine ad universum, 

 non relativus tantummodo ad sensuin) tails est, brevi 

 verborum complexu. Calor est motus cxpansivus, colii- 

 bitus, et nitens per paries minor es. Modificatur autem 

 expansio : id expandendo in ambitum, nonnikil tamen 

 inclinet versus superior a,. Modificatur autem et nixus 

 ille per partes ; ut non sit omnino segnis, sed incitatus, 

 ct cum impetu nonnullo. 



Quod vero ad operativam attinet, eadem res est. 

 Nam designatio est tails. Si in aliquo corpore natu- 

 rali poteris excitare motum ad se dilatandum, aid cx- 

 pandendum ; eumque motum ita reprimcre et in sc ver- 

 ierc, id dilatatio ilia non procedat cequalitcr, sed partim 

 obtineat, partim retrudatur ; proculdubio gcnerabis cali- 

 dum : non habita ratione, sive corpus illud sit elemen- 

 tare, (ut loquuntur) sive imbutum a coelestibus 39 ; sive 

 luminosum, sive opacum ; sive tenue, sive densum ; 

 sive localiter expansurn, sive intra claustra dimensionis 

 primse contentum ; sive vergens ad dissolutionem, sive 



38 Thus ends Bacon s illustration &quot; his Hypothesis is the very same 

 of his Method. Though we may as one of those which for more than 

 not use it in modern Induction, two centuries has divided the opin- 

 still it quite deserves Playfair s en- ions of Philosophers. It is still a 

 comium : &quot; Bacon s method of question whether Heat is really 

 treating his collection of facts on matter, or any thing more than 

 the subject of Heat is extremely Motion.&quot; The authorities now in 

 judicious, and the whole disquisi- cline to the former opinion, since 

 tion highly interesting.&quot; Encycl. Dr. Black s discoveries of Latent 

 Brit. Dissert, iii. p. 460. At first Heat. 



these 20 Aphorisms seem to have 39 This is the scholastic distinc- 



been regarded as the most valuable tion between bodies Terrestrial or 



part of the Novum Organum ; and Elementary and bodies Celestial. 



were even printed without the rest As far as modern Astronomy and 



of the work at Leyden in 1638. It Chemistry enable us to judge, there 



is, of course, valuable as a full spe- is no difference in material between 



cimen of his Method : by which he the heavenly bodies and the earth; 



hoped &quot;to level intellects,&quot; and to nor, from one s knowledge of their 



obtain a sort of mathematical cer- connection by means of gravity, 



tainty in discovery. And it is no would one expect any thing else, 



little praise to be able to add that Cf. supra, II. 18. 



