. A system of anatomy for the use of students of medicine (Volume 1). d the author to conclude,— That the influence of the brain is not directly necessary to the actionof the heart; and That when the brain is injured or removed, the action of the heartceases only because respiration is under its influence; and if, under thesecircumstances, respiration is artificially produced, the circulation will various experiments apply particularly to the cases in which thebrain is deficient. The effects of mental agitation on the heart are like-wise reconcilable to the theory which ari
. A system of anatomy for the use of students of medicine (Volume 1). d the author to conclude,— That the influence of the brain is not directly necessary to the actionof the heart; and That when the brain is injured or removed, the action of the heartceases only because respiration is under its influence; and if, under thesecircumstances, respiration is artificially produced, the circulation will various experiments apply particularly to the cases in which thebrain is deficient. The effects of mental agitation on the heart are like-wise reconcilable to the theory which arises out of them. But they throwno light on the question why the motions of the heart are so perfectly freefrom the influence of the will: and although they seem to prove incon-testably that the motion of the heart is independent of the brain, it oughtto be remembered that in certain diseased states of the brain, where thatorgan appears to be compressed, the action of the heart is often very irre-gular, and its contractions less frequent than usual. END OF VOL.
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