Chapter I: Preface

The basis of this little volume is a paper on Insomnia, published in the New York Medical Journal in May and June, 1865. This was subsequently enlarged and published in a separate form, under the title “Wakefulness, with an Introductory Chapter on the Physiology of Sleep.”

The very favorable reception which it met with in this country, in Great Britain, and on the Continent, from the medical press, the profession, and the public generally, led to the exhaustion of a large edition in a few months.

The present issue was announced nearly two years ago, and the printing begun. Increasing professional duties have, however, prevented me bestowing that continuous labor upon it which was desirable, and hence the publication has been long delayed. My apologies therefore are due, first, to my excellent and dear friend, the senior member of the house of J. B. Lippincott & Co., whose patience I know has been severely tried, but who has scarcely reproached me for my neglect; and second, to that portion of the public which has been kind enough to make repeated inquiries relative to the appearance of this monograph, and which I trust will not be disappointed, now that it is really published.

162 WEST 34TH ST., NEW YORK,
_July 10th, 1869_.

CONTENTS.

PAGE

CHAPTER I.

The Necessity for Sleep 9

CHAPTER II.

The Causes of Sleep 18

CHAPTER III.

The Physical Phenomena of Sleep 52

CHAPTER IV.

The State of the Mind during Sleep 62

CHAPTER V.

The Physiology of Dreams 107

CHAPTER VI.

Morbid Dreams 147

CHAPTER VII.

Somnambulism 192

CHAPTER VIII.

The Pathology of Wakefulness 222

CHAPTER IX.

The Exciting Causes of Wakefulness 240

CHAPTER X.

The Treatment of Wakefulness 278

CHAPTER XI.

Somnolence 288

CHAPTER XII.

Somnolentia, or Sleep Drunkenness 304

APPENDIX 317

SLEEP AND ITS DERANGEMENTS.