On a new method of recording the motions of the soft palate / By Harrison Allen.

  • Allen, Harrison, 1841-1897.
Date:
1884
Catalogue details

Licence: Public Domain Mark

Credit: On a new method of recording the motions of the soft palate / By Harrison Allen. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    the force exerted by these muscles, and if the rod be in the way of one of them it will be pushed to the median side and to a point nearer the centre of the naso-pharynx than it occupied prior to the time of contraction. If the rod be thrust through the right nostril it will be moved from left to right; if it be thrust through the left nostril it will be moved from right to left. These curves are best recorded by placing the kymographion-cylinder in a horizontal ]DOsition. The following cut exhibits a few of the lateral curves, so that an opportunity is afforded of contrast- inof them with the vertical curves. Fig. 5. f\f\ [fill IffifiPif fi'i i|ffii fwill!l|l||'iilTi|f!li|ll|i|li|i|i|liillll|if|1P|fi'»'^^ l'ii|'H'' f| riHfiii''iifF^ifyifH oi, oi, el u, 0, i a, i, a et V . lillaillESiiSil Fig. 5.—A number of palate movements recorder! by the lever upon the horizontal cylinder of the kymographion. The correlation between the two kinds of curves is sufficiently exact to permit either the one or the other to be used, and since it is convenient to retain the