Part of a Dissertation on Life
The New England Journal of Medicine and Surgery and the Collateral Branches of Science
1st. Section of the spinal marrow ucar the occiput. 2d. Decapitation. 3d. Destruction of all the medulla spinalis. •uh. Destruction of the medulla cervicalis. 5lh. Destruction of dorsal portion of the medulla. «th. Destruction of the lumbar portion of ditto. His object* in the .hrec first cases, was, to compare the state of the circulation after the section of the spinal marrow at the occiput, and after decapitation, with the state of it after the destruction of the spinal marrow. In the three
... rrow. In the three latter cases, the destruction of the some portion of the medulla, not producing the same effects on life at the different ages, the object of them was to compare their effects, in relation to the circulation every live days. He has related to us one of the experiments for each of the six cases which were performed on the first, tenth, and twentieth days. Those of the first and tenth days I have repeated with great care from two to four times. In which I was obliged to sacrifice between 30 and 40 animals. The following are the results. EXPERIMENTS ON RABBITS ONE DAY OLD. CASE 1st. Section of the Medulla Spinalis near the Occiput. Circulation continues. Having cut the medulla spinalis with a needle between the occiput and first vertebra. All the inspiratory motions were instanlly annihilated, and replaced by gaping«, the animal was agitated about a minute, after which, sensibility continued over the whole body until extinguished at 18'. The gnpiugs continuing and the carotids being black and round, but smaller than nt the com-* he Gallois.