Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 ipS EFFECTS ON PLANT RESPIRATION Time (Sept. 19) 9:30 10:30 II 130 Readings of the Scale^ multiplied by 10 RaBr^ Amt. of RaBr^ Amt. of Amt. of Temp. 1,500,000 Change 10,000 Change Control Change 12 I 2 3 30 30 30 30 4:30 5:30 (Sept. 20) 8:30 9-45 9-05 7-50 7-30 Total, 4-25 0-45 5-^5 Total in 23 hrs. = 9-35 7-45 0-33 4-25 9-30 7-95 7-50 7-30
Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 ipS EFFECTS ON PLANT RESPIRATION Time (Sept. 19) 9:30 10:30 II 130 Readings of the Scale^ multiplied by 10 RaBr^ Amt. of RaBr^ Amt. of Amt. of Temp. 1,500,000 Change 10,000 Change Control Change 12 I 2 3 30 30 30 30 4:30 5:30 (Sept. 20) 8:30 9-45 9-05 7-50 7-30 Total, 4-25 0-45 5-^5 Total in 23 hrs. = 9-35 7-45 0-33 4-25 9-30 7-95 7-50 7-30 0-35 0-35 4-90 °C. 25 25 25 25 25-75 25-75 26 26 26 26 The total amount recorded of CO2 evolved in 8 hours is units, following exposure to the rays from the salt of activity 1,500,000; units following exposure to the rays from the salt ^ 1 2 3 4 5 6 7 .& Hours Fig. 50. Acceleration of Respiration of germinating Wheat by Radium Rays. of 10,000 activity, and units in the control. During the last 15 hours of the experiment, units were recorded following ex- posure to the radium of stronger activity; units following ex- posure to the radium of weaker activity, and units in the control. The total amounts evolved during 23 hours were recorded respect- ively as follows : units; units; units.
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