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| | CIRCULATION OF BLOOD |
 | | I was greatly pleased to see very distinctly the circulation of the blood [in the tadpole, which was driven on from the parts that were nearest to the body to those on the outside, thus causing an uninterrupted, very rapid circulation. |
 | | This circulation was not regular in its movement, but at very short intervals it was continually brought about anew with sudden impulses, and before there was another sudden impulse we might (in case we had not observed a continual increase in the rapidity) have thought that a stoppage in the circulation would follow. |
 | | These blood vessels, called "arteries and veins" (being nevertheless identical), were exceedingly numerous at the ends of these fingers, and each ran in a curve, which made it impossible to follow the particular course of each vessel. |
| iweb.tntech.edu /chem281-tf/leeuw3.htm (791 words) |
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