CONTENTS. XV11 



CHAPTER PAGE 



XXXI. VALUE OF STUDY .303 



XXXII. NECESSITY OF INVENTIVE POWER. ADVANTAGE OF 



EXPERIMENTS 306 



XXXIII. NECESSITY OF MANIPULATIVE SKILL . . .313 



XXXTV. OBSERVATION OF PHENOMENA. USE OF THE SENSES 



IN SCIENTIFIC RESEARCH .315 



XXXV. USB OF THE POWER OF COMPARISON IN SCIENTIFIC 



RESEARCH 324 



XXXVI. USE OF THE REASONING POWER IN SCIENTIFIC 



RESEARCH 332 



XXXVII. NECESSITY OF IMAGINATIVE POWER , 360 



PAET IV. 



ACTUAL WORKING IN ORIGINAL SCIENTIFIC RESEARCH. 



XXXVIII. SELECTION OF A SUBJECT OF INVESTIGATION . . 372 



XXXIX. OUTLINE OF A MODE OF CONDUCTING AN ORIGINAL 



RESEARCH 377 



XL. ADVANTAGES OF VARIETY OF EXPERIMENTS . . 382 



XLI. ADVANTAGES OF NUMBER OF EXPERIMENTS . . 385 



XLIL IMPORTANCE OF MEASUREMENTS. . . . . 387 



XLIII. COMPLETION OF RESEARCHES 396 



XLIV. CLASSIFICATION OF RESULTS 398 



XLV. USE OF GENERALISATION 400 



XL VI. DISCOVERY OF DYNAMIC CAUSES. . . . . 403 



XLVII. DISCOVERY OF STATIC CONDITIONS . . 435 



XLVIII. DISCOVERY OF COINCIDENCES 444 



XLIX. EXPLANATION OF RESULTS 447 



a 



