CONTENTS ix 



PART III 



THE PHYSICAL INTERPRETATIONS 



SECTION A 

 Of the simple reversible operations in thermodynamics 



PAGE 



Isometric, isobaric, isothermal, and isentropic change 69 



SECTION B 

 Of the fundamentally irreversible processes 



Heat conduction, work into heat of friction, expansion without work, and 



diffusion of gases 7 2 



SECTION C 



Of negative change of entropy 

 Some of its physical features and necessary accompaniments 78 



SECTION D 



Physical significance of the equivalents for growth of entropy given on 



pp. 42-43 80 



SECTION E 



Physical significance of the more specific statements of second law given 



on pp. 44-47 81 



PART IV 



SUMMARY OF THE CONNECTION BETWEEN PROBABILITY, IRREVERSI- 

 BILITY, ENTROPY, AND THE SECOND LAW 



SECTION A 



(i) Prerequisites and conditions necessary for the application of the 

 theory of probabilities 



(a) Atomic theory; (&) like particles; (c) very numerous particles; (d} 



11 elementary chaos " 83 



(2) Differences in the states of "elementary chaos" 85 



(3) Number of complexions, or probability of a chaotic state... 86 



