Muscular viscera which are composed of unstriped fibre, like the intestines, or of a mixture of striped and unstriped, like the heart, are probably very liable to a secondary paralytic influence from certain special neuralgiæ. It is ascertained that the pain of a certain degree of severity in the branches of the fifth may absolutely stop the heart's action for a moment--an effect which is succeeded, usually, by violent and disorderly pulsations. I have myself once known the operation of "pivoting" a tooth, which gave frightful pain, cause instantaneous and most alarming arrest of the heart's motion, which for a minute or two seemed as if it were going to be fatal. But the variety of visceral paralysis which is probably far the most frequent is secondary paralysis of the bladder, from neuralgia in one or other of the pelvic organs, or of the external genitalia; and next to this comes paralytic distension of the cæcum, colon, or rectum, secondary to various abdominal and pelvic neuralgic affections. In one instance of acute ovarian neuralgia that I saw, the paralytic distention of the colon was by far the most remarkable circumstance, so enormously was it developed; and for some days after the neuralgia had ceased, and when the flatulence had nearly disappeared, the intestine remained absolutely torpid. 4. Convulsive actions of muscles, as every one knows, are very common complications of neuralgia. In trigeminal neuralgias these may be observed (according to the division or divisions of the nerve that are affected) in the proper muscles of the eye, or in those supplied by the fourth and sixth nerves, or (perhaps only when two or three divisions of the fifth are neuralgic at once) by the portio dura. It is curious, however, that those formidable spasmodic affections of the face which belong to the same order as torticollis and writer's cramp, are not frequently, if ever, directly associated with trigeminal neuralgia. The only connection between them seems to be that these peculiar spasmodic affections are only developed in highly-neurotic families, some of whose members are almost sure to be found suffering from some form of regular neuralgia. In severe sciatica it has several times happened to me to see convulsive action of the flexors, bending the leg spasmodically upon the thigh. And in a very large proportion of all neuralgias, wherever situated, attentive observation of the patient during the paroxysms will detect the existence of local twitching or local spasm of muscles, though these may be slight in degree.