An inaugural thesis on the relation between the sanguiferous and nervous systems : submitted to the examination of the Rev. Horace Holley, A.M. ; A.A.S. President, the trustees and medical professors of Transylvania University, on the 12th day of March, 1822 ; for the degree of doctor of medicine.
- Miller, Henry, 1800-1874.
- Date:
- 1822
Licence: Public Domain Mark
Credit: An inaugural thesis on the relation between the sanguiferous and nervous systems : submitted to the examination of the Rev. Horace Holley, A.M. ; A.A.S. President, the trustees and medical professors of Transylvania University, on the 12th day of March, 1822 ; for the degree of doctor of medicine. Source: Wellcome Collection.
Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)
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![carotid and femoral arteries afforded a copious stream of the vital fluid, which gushed out,pcr saltum, ofaflorid or dark complexion, according as artificial respiration was supported or discontinued. From various trials it was found that, in such experiments, the circulation cea- ses quite as soon without, as with the destruction of the spina] marrow; death in both instances seeming to be produced by the hemorrhage. Between cold and warm blooded animals there are so many important differences, that in experimental inves- tigations^ coincidence of result obtained from both, is a strong argument in favour of the accuracy and fidelity of the experiments, and the prevalence of the law, they are intended to elucidate. Dr. Philip, therefore, had re- course to frogs, as the most proper subjects for a repeti- tion of his experiments. As the parietes or walls of the heart of the frog are transparent, he could easily exam- ine the state of the circulation, and its affection, if any, by the loss of the spinal marrow. We shall take the lib- erty of transcribing one of these experiments, which ap- pears to us to be an experimenlum cruris, and which is thus briefly detailed by the modest and indefatigable author. The brain and spinal marrow of a frog were removed at the same time. On opening the thorax, the heart was found perfoiming the circulation freely. p, 72. After all this we think Dr. Philip warranted in the following observation: It appears from these expem ni nts that the action of the heart is as independent of every part of the spinal marrow, as of the brain; and, consequently, that the opinion of M. Le Gallois that it derives its power from that organ, and particularly from the cervical part of it. must be regarded as erroneous. e](https://iiif.wellcomecollection.org/image/b21141095_0021.jp2/full/800%2C/0/default.jpg)
