Show Plants' Plants Food Making l Slowed by Heavy Water New York Heavy water containing weight double-weight hy hydrogen hydrogen hydrogen hy- hy drogen atoms instead of the common weight single-weight ones slows down the making food pro process ess in green plants Drs J James ames Curry and Sam F. F Tre- Tre lease of Columbia university have found They kept colonies of a one one celled celled green plant In practically lly puro pure heavy neavy water and parallel l colonies In similar amounts of ordinary water The heavy water colonist calomel carried on n photosynthesis or primary primary mary food rood production only about aboul two fifths as rapidly as those In the common water II I r |