Lectures upon the principles of surgery : delivered at the University of Michigan / by Chas. B. Nancrede.

  • Nancrede, Charles B. (Charles Beylard), 1847-1921
Date:
1905
Catalogue details

Licence: In copyright

Credit: Lectures upon the principles of surgery : delivered at the University of Michigan / by Chas. B. Nancrede. Source: Wellcome Collection.

    19/430 (page 17)
    LECTURE I. THE NECESSITY OF A KNOWLEDGE OF THE PRIN- CIPLES OF SURGERY FOR SUCCESSFUL PRACTICE OF THE ART; HYPEREMIA. The principles of surgery are those laws formulated from the combined results of experience and experiment, which when applied to special cases are found to explain the phenomena of disease and indicate the general meas- ures best calculated to combat morbid conditions. Because certain of the principles or laws tend to nullify one another the resultant phenomena actually observed when the former are operative seem so totally dissimilar from what should logically be expected, that they ap- parently disprove the truth of the alleged principles until closely scrutinized, when, if two laws are concerned, a third principle will be clearly distinguishable, which, like the resultant of two physical forces, is the diagonal —a mean as it were—between the two. When the appli- cation of many apparently conflicting principles is clearly demanded for the explanation of a pathologic condition or to warrant the enunciation of a therapeutic law, the ultimate principle may be difficult of detection. Still, the truth of every composite law can be demonstrated by careful study, because the resultant principle applicable to any given case will be found either logically, experi- mentally, or clinically, or often by all three methods combined, to be the result of the mutual modifications effected by the conflicting laws, and the final composite law would be incapable of proof by any of the methods applicable if any of the laws of which it is the result were false. In the present state of science our knowledge