CONTENTS 



CHAPTER PAGE 



I. THE CORRELATION OF VITAL AND PHYSICAL FORCES . 9 



II. THE FUNDAMENTAL PROPERTIES OF LIVING MATTER . 21 



III. ON SOME PROPERTIES OF CRYSTALS, WITH OBSERVATIONS 



ON THEIR MODE OF ORIGIN AND ON THE MODE OF 

 APPEARANCE OF LIVING UNITS . . . -43 



IV. THE MOLECULAR CONSTITUTION OF LIVING MATTER AND 



ITS INNATE TENDENCY TO VARIATION . . .62 



V. THE 'IDS' AND 'DETERMINANTS' OF WEISMANN VERSUS 



THE 'physiological UNITS' OF HERBERT SPENCER . 73 



VI. SOME FACTORS OF EVOLUTION: ORGANIC POLARITY AND 



MUTATION . . . . . .96 



VII. OTHER FACTORS OF EVOLUTION . . . • "3 

 VIII. CONCERNING THE PRESENT OCCURRENCE OF ARCHEBIOSIS . 1 38 



IX. THE HETEROGENETIC ORIGIN OF BACTERIA AND THEIR 



ALLIES ....... 160 



X. THE HETEROGENETIC ORIGIN OF FUNGUS - GERMS, OF 



MONADS AND OF AMCE3M FROM MINUTE MASSES OF 

 ZOOGLCEA ...... 182 



