Abstract
IT has been assumed by those who have used a pulse of heat as an indicator to measure the rate of flow of sap in trees1 that the speed of the sap is identical with that of the heat pulse.
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References
Huber, B., Ber. deutsch. Bot. Ges., 50, 89 (1932). Dixon, H. H., Notes Bot. School, Trinity Coll. Dublin, 4, 269 (1937). Huber, B., and Schmidt, E., Ber. deutsch. Bot. Ges., 55, 514 (1937).
Carslaw, H. S., and Jaeger, J. C., “Conduction of Heat in Solids” (Oxford Univ. Press, London, 1947).
Jakob, M., “Heat Transfer”, 1 (John Wiley and Sons, Ltd., New York, 1949).
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MARSHALL, D. Measurement of Sap Flow by Heat Transfer. Nature 182, 878–879 (1958). https://doi.org/10.1038/182878a0
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DOI: https://doi.org/10.1038/182878a0
