Handfield Jones respecting inhibition, with which I thought it best not to encumber the text of the present chapter.] FOOTNOTES: [16] Eulenburg, to whose excellent work ("Lehrbuch der functionellen Nervenkrankheiten," Berlin, 1871) I shall have frequent occasion to refer, has partly misunderstood the drift and scope of my argument, a misfortune which I owe to the impossibility of giving, in the "System of Medicine," more than the briefest and most superficial sketch, both of my ideas and of the facts on which they rest. [17] _Op. cit._, p. 60. [18] This opinion is somewhat stronger than that expressed in my article in the "System of Medicine." I can only say it is the result of much increased experience. [19] _Journal de la Physiologie, v._ [20] "Ernährungsstörungen der Augen bei Anæsthesie des Trigeminus." Mitgetheilt von Dr. v. Hippel in Konigsberg in Preussen. Archiv f. Ophthalm. Band. xiii. [21] Zeitsch. f. rat. Med., 1867. There is corroborative evidence, from independent sources, of the truth of Meissner's views. His own observation only proved half the case; but he quotes an observation of Buttman's in which the exact converse of his own experience happened, the external fibres being affected without the inner band, and anæsthesia without trophic changes being the result. Moreover, Schiff (Gaz. hebdom., 1867) obtained experimental results (in operating on cats and rabbits) which coincide with Meissner's. [22] London Hospital Reports, vol. iii., p. 305. [23] Wegner, loc. cit. [24] Archiv f. Ophthalm., xv., 1. [25] "Deutsches Archiv f. klin. Med.," ii., 2, 1866. I am not aware whether Piotrowski has at all altered his opinions since the (subsequent) observations of Ludwig and Cyon upon the "depressor" nerve. [26] "Functional Nervous Disorders." Churchill, 2d edit., 1870. [27] "Prize Essay of the New York Academy of Medicine." New York: Wood & Co., 1869. [28] Volkmann's Sammlung klinischer Vortrage, No. 2. "Ueber Reflex Lahmungen," von E. Leyden. Leipzig, 1870. [29] "Cases of Urinary Paraplegia," Med.-Chir. Trans., 1856. [30] Wurzburg. Med. Zeitsch., iv., 56-64. [31] Med. Cent. Ztg. 21, 1860. CHAPTER IV. DIAGNOSIS AND PROGNOSIS OF NEURALGIA. _Diagnosis._--This subject is much simplified and shortened, in regard to our present purpose, by the plan of the present work, which, by separately describing (in Part II.) the other disorders which resemble neuralgia, and are liable to be confounded with it, avoids the necessity for stating here the negative diagnosis of neuralgia itself. We are only concerned here to give a clear picture of the positive signs which it is necessary to verify before we can suppose disease to be neuralgia. The special modes of searching for these are interesting, and in some respects peculiar;