The plagiarisms of Julius Jeffreys, F.R.S., in his treatise on the statics of the human chest / by G. Calvert Holland.

Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: The plagiarisms of Julius Jeffreys, F.R.S., in his treatise on the statics of the human chest / by G. Calvert Holland. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    resident in the chest,’ after an ordinary expiration, is stated as above 250 cubic inches; by me, at 280 or 290 cubic inches. Discovery II. is, that “ the air of respiration neither enters the air-cells nor the smaller air-tubes it has in fact “ no business with the blood, nor any footing in the cells of the lungs nor has it any “ direct concern in the oxydation of the blood. The same views are distinctly stated by me : “ The air which is received hy any single inspiration, does not immediately act upon the blood ; its office is to supply the defici- ency occasioned hy the previous expiration; and after several series of such expirations it is then brought into intimate contact with this fluid, and tends to continue the successive alterations which it undergoes.”* It is scarcely possible for words to explain more clearly the functions assigned to the breath or air of respiration, and yet he adduces the same doctrine as original, and re- gards it as demanding ‘ a considerable modification of our previous opinions.’ Discovery III. is, that the air breathed out, is not that “ which went in, but a mixture of that air with the upper resident air!' In the Introduction to my work occur these remarks : “ By taking into consideration, that a small quantity only of the air within the lungs is at any one moment deteriorated, and, still further, that the left ventricle contracts 70 or 80 times per minute, in order to propel the arterial blood which is transmitted by the lungs, we shall have reasons sufficiently ample to account for the possibility of these organs bearing such changes, and for the ease with which the system is supported in an equable temperature.”f It is further stated: I have observed in Chap. I., xix. and xx. that the ah’ inspired is not immediately expelled by expiration, but that a portion is omitted— * Experimental Inquiry, &c., p. 13. The words and passages in italics, as originally printed, f Page xx.