This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 edition. Excerpt: ...from the nose through some opening in the bony lamina that normally separates the cranial and nasal cavities. The first inquiries we instituted in Dr Thomson's case related to the quantity of fluid formed. One portion, collected by the patient herself in the course of an hour, measured 4 c.c. Another ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 edition. Excerpt: ...from the nose through some opening in the bony lamina that normally separates the cranial and nasal cavities. The first inquiries we instituted in Dr Thomson's case related to the quantity of fluid formed. One portion, collected by the patient herself in the course of an hour, measured 4 c.c. Another portion, collected under the supervision of Dr Thomson in ten minutes, measured 3.9 c.c. If the first portion is taken as a measure of the rate of secretion, the amount formed in the day will be 96 c.c. Taking, however, the second observation as being more accurate, the amount formed in the twenty-four hours will be over half a litre (561.6 c.c). It is possible that this estimate is too high, as doubtless the patient, being under the observation of a physician, would be somewhat excited, and the consequent alteration of the circulation would, as we shall immediately see, cause the flow to become more abundant. In a monograph on the cerebral circulation f Hill put forward the view that the rate of secretion of the cerebro-spinal fluid, when the cranio-vertebral cavity is opened, depends directly on the difference between the pressure in the cerebral capillaries and that of the atmosphere. At the same time it was shown that "Observations on the Cerebro-spinal Fluid in the Human Subject," by St Clair Thomson, M.D., Leonard Hill, M.B., F.R.S., and W. D. Halliburton, M.D., F.R.S., Proc. Roy. Soc, vol. lxiv., p. 343. A full account of the case is given in Dr Thomson's book, The Cerebrosfiinal Fluid. Cassell & Co., 1899. t The Physiology and Pathology of the Cerebral Circulation by Leonard Hill. London: Messrs Churchill, 1896. cerebral capillary pressure varies directly and absolutely with vena cava pressure Thus the cerebral capillary...
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