...many valves without design ; and no design seemed more probable than that, since the blood could nor, because of the interposing valves, be sent by the veins to the limbs, it should be sent through the aiteries, and return through the veins, whose valves did not oppose its course that way." Fabricius...

...invited to think that so provident a cause as Nature had not placed so many valves without design ; and no design seemed more probable than that, since the blood could not well, because of the interposing valve, be sent by the veins to the limbs, it should be sent through the arteries, and return • "...