XVI CONTENTS. 



PART II. 



GENERAL CONDITIONS OF SCIENTIFIC RESEARCH. 



CHAPTER PAGE 



XV. GENERAL BASIS OP SUCCESS IN DISCOVERY . . 167 



XVI. THE POSITION OF MAN AS A DISCOVERER IN NATURE 168 



XVII. STARTING-POINTS OF EESEARCHES AND DISCOVERIES 170 



XVIII. CHRONOLOGICAL ORDER OF DISCOVERY AND OF 



SCIENCE 182 



XTX. KELATIVE IMPORTANCE OF DIFFERENT RESEARCHES 



AND DISCOVERIES 189 



xx. KELATIVE FREQUENCY OF DIFFERENT KINDS OF 



DISCOVERIES 194 



XXI. ON UNEXPLAINED PHENOMENA . . . .195 



XXII. FUNDAMENTAL IMPORTANCE OF QUALITATIVE 



KNOWLEDGE . . 202 



XXIII. NECESSITY AND VALUE OF CLASSIFYING SCIENTIFIC 



TRUTHS 204 



XXIV. DIFFICULTIES OF SCIENTIFIC KESEARCH . . . 209 

 XXV. COST OF SCIENTIFIC EESEARCHES . . . .219 



XXVI. UNEXPECTED OR 'ACCIDENTAL ' DISCOVERIES , 223 



PART III. 



PERSONAL PREPARATION FOR RESEARCH. 



XXVII. PERSONAL CONDITIONS OF SUCCESS IN KESEARCH . 240 



XXVIII. CIRCUMSTANCES AND OCCUPATIONS FAVOURABLE 



TO SCIENTIFIC RESEARCH 262 



XXIX. MOTIVES FOR PURSUING SCIENTIFIC RESEARCH . 288 



xxx. ADVANTAGES OF PREVIOUS SCIENTIFIC KNOW- 

 LEDGE . ' , 293 



