1910] STOCKBERGER—TOXIC SOLUTIONS AND MITOSIS 405 
TABLE I 
COMPARATIVE GROWTH IN CuSO, AND DISTILLED WATER DURING THE 
FIRST DAY , 
RADICLES IN COPPER SULFATE SOLUTIONS | CONTROLS IN DISTILLED WATER 
E aie 1A th Growth of Average growth 
Concentration tse mide roe ent per hour correspondin oe 
n/20,000..... 16.5 0.5 8.7 0.52 
n/ 30,000... .. 19.5 0.5 5.0 0.25 
n/40,000..... 19.5 Z: 0.09 12.8 0.65 
23.5 Dor 0.04 ° 1 °.50 
/50,000..... 19.5 3.0 0.15 12.8 0.65 
20.9 207 0.18 7.8 0.39 
21.5 3:5 0.17 11.8 0.54 
n/60,000..... 19.5 Aa 0.22 7.8 0.40 
2265 1.8 0.07 10.2 0.47 
n/70,000..... 19 8.0 0.42 12.1 0.63 
20.0 6.0 0.30 5 Bo 0.55 
20.0 “2 0.28 13.0 0.65 
n/80,000..... 18.5 4.5 0.24 II.3 0.61 
19.0 9.2 0.48 12.1 0.63 
20.0 5.9 0.29 13-0 0.65 
7/90,000. . . 18.5 et 0.26 513 0.61 
19.9 O59 0.51 12.1 0.63 
20.0 5-2 0.27 13.0 0.65 
n/100,000.... 18.5 7.0 0.37 ir.3 °.61 
19.0 ri.2 0.58 E27 0.63 
20.0 8.3 0.41 13.0 0.65 
n/{10,000... . 18.5 7.0 0.37 +2 -% 0.61 
2n.§ 6.5 0.30 14.6 0.67 
24.0 8.5 0.35 14.3 0.59 
n/120,000.... 21.5 6.8 0.31 14.6 0.67 
24.0 9-5 0.39 14-3 0.59 
N/130,000.... a04 8.0 0.37 14.6 0.67 
24.0 12.3 0.51 14.3 ©-59 
n/140,000.... 21.0 so 0.23 8.3 0.39 
24.0 11.8 0.49 16.0 0.66 
n/150,000.... 21.0 6.5 0.30 8.3 0.39 
' 32.6 13.5 0.61 16.5 0.75 
n/160,000... . 24.0 12.8 0.53 16.0 0.66 
n/250,000.... 19.0 11.5 o.60 14.2 0.74 
19 8.8 0.46 10.3 0.54 
