Maladies de l'oreille : exploration de l'oreille à l'état physiologique et pathologique : examen devant les conseils de révision des sujets qui sont ou se prétendent atteints de surdité / par D.-M. Levi.

  • Lévi, David Mayer, 1834-
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: Maladies de l'oreille : exploration de l'oreille à l'état physiologique et pathologique : examen devant les conseils de révision des sujets qui sont ou se prétendent atteints de surdité / par D.-M. Levi. 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.

    8/44 page 10
    candour and intellectual abilities of its author, and from its admirable explanation of ail the phenomena, was wonderfully calculated to produce a dazzling ef- fect on the minds of scientific inquirers. Accord- ingly, wlien fîrst promulgated, it was considered by almost ail Physiologists as tbe most beautiful spéci- men of Chemical reasoning, in accounting for the mys- terious operations of the animal economy, that had ever been presented to the world. Blood, according to this theory, having the power of evolving calorie, Physicians readily imagined, that an increased flow of that fluid into the texture of an organ would hâve the necessary effect of increasing its température. Though 1 am not disposed to acquiesce in the sweep- ing opinion which many hâve adopted, namely, that the experiments of Mr Brodie hâve completely sub- verted this beautiful and interesting theory, yet, I must confess, that it is entirely unable to explain the heat of an inflamed part. According to this hypo- thesis, the évolution of heat is accomplished by the change of the blood from the arterial into the venons State ; but in an inflamed organ, its fonctions and nutrition, from the performance of which the blood undergoes the accustomed change, are suspended, and this fluid, therefore, is observed to return as it went, not venons, but arterial ; consequently, having its capacity for calorie undiminished, it must still re- tain its usual quantity. The cause of this symptom bas never been satisfactorily ascertained : it may pro- bably be owing to some unusual condition of the
    digitised image 1
    digitised image 2
    digitised image 3