Additional observations on the static lung tests / [William A. Guy].

  • William Augustus Guy
Date:
[1842?]
Catalogue details

Licence: Public Domain Mark

Credit: Additional observations on the static lung tests / [William A. Guy]. Source: Wellcome Collection.

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    Table XXX. Name of Author. Before Respiration. After Respiration. Before After r. ...A. Uesp. Kesp. Max. Min. Mean. Max. Min. Mean. Haartmann, 4 7 1534 1066 1257 1619 1023 1327 Jorg, 2 3 677 612 645 1133 766 945 Eisenstein and Zebitsch, 7 18 1185 369 812 1537 616 980 Schmitt, 36 27 1661 553 1056 2132 695 1271 Lecieux, 29 237 1636 340 773 2440 432 1048 Froces Verbal, &c. 5 13 1112 463 685 1514 476 976 Orfila, 5 5 586 448 528 1344 619 884 Devergie,* 5 2 101 [ 360 771 1262 1019 1140 Taylor, 5 4 687 586 645 774 562 676 Dr Guy, 3 3 1480 632 920 1178 510 805 Table I. and IV. . 109 322 1661 340 874 2440 432 1072 A single glance at this table will show the great difference which exists between all the values derived from small groups of observa¬ tions, the insufficiency of the data hitherto employed in discussing the value of the static lung tests, and the consequent necessity for a more extended induction. My former essay was intended to supply this want as far as existing materials would permit; the present essay may serve to show that the necessity for a larger number of observations has not been exaggerated. On a closer inspection of the table it will be seen that the maximum weight of the lungs of still-born children is, according to the observations of Schmitt, as high as 1661 grains, and according to Orfila, as low as 586; the former number being nearly three times as great as the latter. In like manner the smallest weight observed in four still-born children by Haartmann is 1066 grains ; the smallest number recorded by Lecieux is 340; the former number being more than three times as great as the latter. The average num¬ bers present, as might be expected, less disparity, but the highest number is more than twice as great as the lowest. If we now examine the second column of the table, we disco¬ ver differences of nearly the same amount. The column of maxi¬ ma presents 2440 as the highest number, and 774 as the lowest; the former being more than three times as great as the latter. In the column of minima, the highest number is more than twice as great as the lowest, whilst the least average is little less than half the highest. That these differences are entirely due to the small number of facts collected by the several authors, and not to any error of cal- * In the former essay, the maximum 1800 is given on the authority of Devergie. This is an error, the highest number observed by him in healthy lungs being 1011. In a case of oedema of the lungs the weight was 1537* The maximum before res¬ piration, therefore, is on the authority of Schmitt, 1001.