92 Stiles.—Concentration of the Nutrient Solution and the 
Concentration = i. 
Shoot. 
Root. 
5 ■ 
Total. 
grm. 
grm. 
grm. 
0-2J9 
0-082 
0’J20 1 
o -359 
0*097 
0*456 
o -377 
0*120 
o *497 
0*412 
0*120 
0-532 
0*427 
0*111 
o -538 
0*476 
0*125 
o*6oi 
0*474 
0*131 
0*605 
o -547 
0*129 
0*676 
0*546 
0*158 
0*704 
0*785 
0*204 
0*989 
Mean 
0*489 
o-i 33 
0*622 
Probable error of mean 
0-035 
Dry weight of shoot 
Dry weight of root 
= 3 * 7 * 
Concentration = ■ 
1 
10 • 
Shoot. 
Root. 
Total. 
grm. 
grm. 
grm. 
o'i88 
0'o8o 
0-268 
0-315 
0*080 
o -395 
0-313 
0*099 
0*412 
0*382 
0*101 
0*483 
0*361 
0*136 
0*497 
0*425 
0*112 
o -537 
0*415 
0*140 
o -554 
0*466 
0*124 
0*590 
0*569 
0*151 
0*721 
o*6ii 
0*198 
0*809 
Mean 
0*429 
0*127 
°*555 
Probable error of mean 
0*030 
Dry weight of shoot 
Dry weight of root 
= 3 ‘ 4 * 
Concentration = 
Shoot. 
Root. 
Total. 
* 
grm. 
grm. 
grm. 
0-243 
0*096 
o -339 
o'27 9 
o'o6j . 
°' 34 2 
0*312 
0*084 
0*396 
0*342 
0*113 
o -455 
o -357 
0-113 
0*470 
0*362 
0*116 
0*478 
0-370 
0*143 
o-5i3 
o -394 
0*123 
0*517 
0*396 
o-i35 
0*531 
0-405 
0-133 
0-538 
Mean 
o -354 
0-117 
0*471 
Probable error of mean 
0*015 
Dry weight of shoot 
Dry weight of root 
= 3*0. 
1 The plants whose dry weights are shown in italics 
were of an entirely different form from the 
They were smaller, with finer leaves, of a much bushier and much less elongated habit, and 
much darker green. All 
the other plants were so 
similar in form that the three exceptions 
noted in the tables are obviously not in the pure line. Their dry weights have therefore not been 
considered in calculating the mean or the probable error. 
