PAGE PREFACE BY R. A. STREATFEILD vii AUTHOR’S ORIGINAL PREFACE x CHAPTER I. ON CERTAIN ACQUIRED HABITS 1 II. CONSCIOUS AND UNCONSCIOUS KNOWERS—THE LAW AND 20 GRACE III. APPLICATION OF FOREGOING CHAPTERS TO CERTAIN 43 HABITS ACQUIRED AFTER BIRTH WHICH ARE COMMONLY CONSIDERED INSTINCTIVE IV. APPLICATION OF THE FOREGOING PRINCIPLES TO 59 ACTIONS AND HABITS ACQUIRED BEFORE BIRTH V. PERSONAL IDENTITY 78 VI. PERSONAL IDENTITY—(_continued_) 91 VII. OUR SUBORDINATE PERSONALITIES 104 VIII. APPLICATION OF THE FOREGOING CHAPTERS—THE 125 ASSIMILATION OF OUTSIDE MATTER IX. ON THE ABEYANCE OF MEMORY 150 X. WHAT WE SHOULD EXPECT TO FIND IF 166 DIFFERENTIATIONS OF STRUCTURE AND INSTINCT ARE MAINLY DUE TO MEMORY XI. INSTINCT AS INHERITED MEMORY 198 XII. INSTINCTS OF NEUTER INSECTS 220 XIII. LAMARCK AND MR. DARWIN 252 XIV. MR. MIVART AND MR. DARWIN 273 XV. CONCLUDING REMARKS 294 APPENDIX AUTHOR’S ADDENDA 308 CHAPTER I. ON CERTAIN ACQUIRED HABITS. IT will be our business in the following chapters to consider whether the unconsciousness, or quasi-unconsciousness, with which we perform certain acquired actions, would seem to throw any light upon Embryology and inherited instincts, and otherwise to follow the train of thought which the class of actions above-mentioned would suggest; more especially in so far as they appear to bear upon the origin of species and the continuation of life by successive generations, whether in the animal or vegetable kingdoms.