INCONSTANT BUTTERFLY
ITS HEART BEATS BACKWARDS. The butterfly, imxnemorably the symbol of inconstancy, has a heart that often beats backwards, Professor John H. Gerould, of Dartmouth College, told the American Society of Zoologists at a recent meeting, says Science Service’s “Daily Science News Bulletin ” (Washington). We read: — “ He has demonstrated this strange behaviour many times. The heart of an insect is in its back instead of its chest, and consists merely of an enlargement in a long blood-vessel. A beat will start at its rear end and travel forward, squeezing the blood on ahead of it.' After repeating this several times, the heart will pause, and then a beat will start at the forward end, sending the blood in the opposite direction. Occasionally the beat will start in the middle, sending the blood both ways.”
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Waipa Post, Volume 39, Issue 3088, 12 December 1929, Page 6
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135INCONSTANT BUTTERFLY Waipa Post, Volume 39, Issue 3088, 12 December 1929, Page 6
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