Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 202 EFFECTS ON PLANT RESPIRATION o Experiment 80. Effect of radium rays on respiration of germinating wheat grains. \^^' ooi 2. Effect on Anaerobic Respiration Experiment 8i Three seeds of the pea {Pisum sativum)^ soaked in tap-water over night, were freed from their seed-coats and then found to weigh gm. They were placed in a test-tube of mercury inverted over a mercury bath. In the tube with the peas, and in contact with them, was placed a celluloid rod coated with ' Lieber's radium coating ' of 10,000 act
Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 202 EFFECTS ON PLANT RESPIRATION o Experiment 80. Effect of radium rays on respiration of germinating wheat grains. \^^' ooi 2. Effect on Anaerobic Respiration Experiment 8i Three seeds of the pea {Pisum sativum)^ soaked in tap-water over night, were freed from their seed-coats and then found to weigh gm. They were placed in a test-tube of mercury inverted over a mercury bath. In the tube with the peas, and in contact with them, was placed a celluloid rod coated with ' Lieber's radium coating ' of 10,000 activity. Thus the seeds came under the influence of the a rays and the emanation, as well as of the /9 and y rays. The control test-tube contained three seeds, also weighing, without their seed-coats, gm. Observations were recorded as follows : Volume of Gas Evolved Time of Observation April 15, 5:00 P. M. ' 16, 10: 18 A. M. ' 17, 4: 30 P. M. ' 18, 9:20 ' 18, 6:40 P. M. ' i9i 9: 30 A. M. Radium Control c .c. •30 •30 .80 .40 .90 •50 .40 Total, c.
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