The chemistry of nerve-degeneration / by F.W. Mott and W.D. Halliburton.

  • Frederick Walker Mott
Date:
1901
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Licence: In copyright

Credit: The chemistry of nerve-degeneration / by F.W. Mott and W.D. Halliburton. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    various watch-glasses have been exhilhted at meetings of the Physiological and Pathological Societies, and have admittedly home oiH our contention. We venture to think that such results are of some practical im])ortance. A com- paratively small (quantity of blood will give the tests, and in cases where it is dithcidt to distinguish between serious cases of organic disease and cases of so-called lunc- tional neurosis, the performance of the tests described may come to the assistance ot the practical physician in making his diagnosis. Choline does not pass into the urine as we showed in our former paper,so that the examination of that secretion would be insufficient in such cases. Fig. 1. The uppermost line represents the respiration taken by the tambour method. The next line is the blood pressure from the carotid. The next is a time tracing in seconds; the next the signal line, the raising of which indicates the period of injection. The lowest line is the abscissa of the blood pressiu’e. The various lines have the same meaning in all subsequent tracings. The respiration tracing is omitted in figures subsequent to fig. 2. The injection produced no effect on respiration. This is true also for choline, and the similarity between these effects and those of choline on the blood pressime may be seen readily if our former paper is consulted. All the tracings were taken from experiments on cats under A.C.E. mixture. All read from left to right. The actual volume of saline solution of the active material Avas in all cases 5 cub. centims. This was injected into the external jugular vein. The numbers given AAUth each tracing indicate the volume of the original blood to which this would correspond. Fig. 1 represents the fall of arterial pressure produced by the injection of an amount equal to 10 cub. centims. of the blood in the case of Beri-beri numbered 3 in the list on p. 441. * Loc. cit., p. 256. 3 L 2
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