Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 200 EFFECTS ON PLANT RESPIRATION rays of radium, twenty wheat grains, weighing (dry weight) .50 gm., were placed before soaking, in contact with the walls of a sealed glass tube containing 10 mg. of RaBr2, of 1,500,000 activity. The duration of exposure was 54 hours. _ tyj 0^ 1 1 1 1 1 1 Experiment 79. of rndium T<nis on Tpspirotton «/⢠y' germinating wheat. p. m., Sept. 20â p. m., Sept. 21. â.-*'*/ â ^ y ^ .^^ ^ â ',..-⢠... ' ,â ' X 5:30 P. M. Time Fig. 51. ^M. 9:301
Effects of the rays of radium on plants . effectsofraysofr1908gage Year: 1908 200 EFFECTS ON PLANT RESPIRATION rays of radium, twenty wheat grains, weighing (dry weight) .50 gm., were placed before soaking, in contact with the walls of a sealed glass tube containing 10 mg. of RaBr2, of 1,500,000 activity. The duration of exposure was 54 hours. _ tyj 0^ 1 1 1 1 1 1 Experiment 79. of rndium T<nis on Tpspirotton «/⢠y' germinating wheat. p. m., Sept. 20â p. m., Sept. 21. â.-*'*/ â ^ y ^ .^^ ^ â ',..-⢠... ' ,â ' X 5:30 P. M. Time Fig. 51. ^M. 9:3011:30 i;30 3:30 5;30 These seeds, together with 20 others, also weighing .50 gm., and serving as a control, were soaked in water over night, and arranged in the respirometer, as described in Experiment 77. ccc 30 o 1 26° 22° 0 Experiment 79. Effect of radium rays o;t respiration of germinating wheat. First 8 hrs. 9:30 10:30 11:30 12\10 1:30 Time Fig. 52. .oo. 2:30 3:30 4-30 5:30
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