On the necessity for contracting cavities between the venous trunks and the ventricles of the heart : on the use of venous sinuses in the head, on the wonderful provision made for the transition from the foetal to the breathing state, on palpitation, on death, and on life, with reflections on the treatment of animals / by John Walker.

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On the necessity for contracting cavities between the venous trunks and the ventricles of the heart : on the use of venous sinuses in the head, on the wonderful provision made for the transition from the foetal to the breathing state, on palpitation, on death, and on life, with reflections on the treatment of animals / by John Walker. Public Domain Mark. Source: Wellcome Collection.