On the natural constants of the healthy urine of man : and a theory of work founded thereon.

  • Haughton, Samuel.
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: On the natural constants of the healthy urine of man : and a theory of work founded thereon. 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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    Part I.— The daily discharge of Urea in healthy Urine of Man. The earlier writers on this subject refer the quantity of urea either to the fluid ounce, or to 1000 parts: both of these modes of estimating urea have been properly discarded by later writers, •who estimate the quantity of urea discharged per twenty-four hours, considering this to be the natural period of man's cycle of labour, food, and rest. The English medical writer on Urine who appears to be held in most repute is the late Dr Golding Bird, whose work has passed through five editions. He does not appear to have ever made any experiments himself, but is content to quote'' from Becquerel's work. I.—Daily Urea. Daily urea of man, 270 grains. Daily urea of woman, 240 ,, The following determinations of urea in 1000 parts have been given by other writers:— II.— Urea in 1000 Grains. Berzelius, 30*10 grains. Lehmann, 31'45 Ditto, 32-91 Ditto, 32-90 Becquerel (man), 13-84 „ 1019 sp.gr. Ditto (woman), 10-36 „ 1015 „ Simon, 12-46 ,,1011 ,, Ditto, 14-58 „ 1012 „ The discrepancies in the foregoing results show that it is absolutely necessary to fix upon some standard of comparison, such as the total quantity per twenty-four hours; otherwise our results will be vitiated by the drinking of a glass or two more or less of water per day, and by other trivial causes. Lehmann's three results are stated to be derived from twenty-four hours' urine of a well-fed and healthy young man, but the total quan- tity passed is not stated. Fifth Edition, pnge 75. B 2