. Some apostles of physiology : being an account of their lives and labours, labours that have contributed to the advancement of the healing art as well as to the prevention of disease. e the blood was concocted before it entered the great vena cava to be distributed overthe body. But on the complex Galenic theory all the blood was notdistributed by the veins to the body, some—a very small part—wassupposed to pass to the lungs by the pulmonary artery (vena arterialis)and there gave off some fuliginous vapours and at the same timetook in something which Galen called pneuma. Some of the bloodthu
. Some apostles of physiology : being an account of their lives and labours, labours that have contributed to the advancement of the healing art as well as to the prevention of disease. e the blood was concocted before it entered the great vena cava to be distributed overthe body. But on the complex Galenic theory all the blood was notdistributed by the veins to the body, some—a very small part—wassupposed to pass to the lungs by the pulmonary artery (vena arterialis)and there gave off some fuliginous vapours and at the same timetook in something which Galen called pneuma. Some of the bloodthus concocted and altered was supposed to pass by the arteria venalis{, the pulmonary vein) to the left heart, there to be furtherperfected into vital spirits. The rest of the blood, he thought,passed directly through the septum of the heart, through the pits ordepressions which exist there. Galen regarded them as holes. Thisblood, mixed in the left heart with the small amount of pneumatizedblood coming from the lungs, was then distributed by the systole and diastole were regarded as active movements, thediastole beins; active in sucking blood into the VESALIUS DEMONSTRATING ( 5 ) Vesalius saw clearly enough that there was no visible directpassage from the right to the left side of the heart. The septum of the ventricles . . abounds on both sides with little pits impressedin it. Of these pits, none, so far at least as can be perceived by the senses, penetratethrough from the right to the left ventricle, so that we are driven to wonder at the handi-work of the Almighty, by means of which the blood sweats from the right into the leftventricle, through passages which escape human vision. (M. Fosters Lectures.) In the last chapter of his work, which contains a curious figureof a pig fixed to an operating table, he tells us that an animal canlive without its spleen; that the brain acts on the trunk and limbsthrough the spinal cord; that section of the rec
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiol, bookyear1902
