had caused them to be partially misunderstood by the German physician. These chapters (Part I., Chapters II. and III.) are certainly the most important portion of my book, and I would particularly direct attention to them, in order that their contents may be affirmed or corrected: the reader will at any time find that they contain a kind of investigation never before systematically carried out with regard to Neuralgia. The causes above mentioned, together with others over which I had no control, have kept back the appearance of this work so long beyond the date for which it was originally announced, that I feel I ought to apologize for an amount of delay that would seem hardly justified by the moderate size of the volume. 16 WIMPOLE STREET, LONDON, _October_ 1, 1871. CONTENTS. INTRODUCTION--ON PAIN IN GENERAL 7 PART I. _ON NEURALGIA._ CHAP. PAGE I.--CLINICAL HISTORY 12 II.--COMPLICATIONS OF NEURALGIA 79 III.--PATHOLOGY AND ETIOLOGY OF NEURALGIA 96 IV.--DIAGNOSIS AND PROGNOSIS OF NEURALGIA 142 V.--TREATMENT OF NEURALGIA 149 PART II. _DISEASES THAT RESEMBLE NEURALGIA._ CHAP. I.--MYALGIA 196 II.--SPINAL IRRITATION 200 III.--THE PAINS OF HYPOCHONDRIASIS 207 IV.--THE PAINS OF LOCOMOTOR ATAXY 210 V.--THE PAINS OF CEREBRAL ABSCESS 213 VI.--THE PAINS OF ALCOHOLISM 215 VII.--THE PAINS OF SYPHILIS 218 VIII.--THE PAINS OF SUBACUTE AND CHRONIC RHEUMATISM 225 IX.--THE PAINS OF LATENT GOUT 227 X.--COLIC, AND OTHER PAINS OF PERIPHERAL IRRITATION 229 XI.--DYSPEPTIC HEADACHE 231 INTRODUCTION. ON PAIN IN GENERAL.