[VoL. 7 
26 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
totad|preeh wt. Rex 
n gu Sol. 7102 (vdd) — 
Sel. A a 
Soll (4d 
12 Sal [3e diia — 
// 
10 
9 
3 H 
h | / Bass un mr (Hdez) A \| ¡Ea E eu 
7 Y Y Y NE 
\ / \ 
"na an 
VJ / 
5 \ V í 
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4| [AZ \ / 
A... Base liae, Soli. Al and. Blades} 
3 | 
Dase (ine, Soli, Aand B (das) 
2 — ÁÁ/——m 
a. " a a D ai a BE ON Cee elt Beo 20 Bem Belz Bel 
34 37] 6/ 64 36 53 59 56 / é / 
2655 Cert Cor csp G4 ed Cs C 7 ye 7 
Fig. 4. One-fourth total green weight of corn in solutions A, B, and C. See 
further explanation under fig. 3 
in the same region of fig. 3 as solution A merely because it was 
necessary to do this in order to present all the data in a single 
figure. 
In order to include solution C again in the tests, and at the 
same time to change somewhat the range of hydrogen ion 
concentrations in the A and B solutions, as well as to repeat 
the former work, a more extensive series of experiments was 
arranged with wheat, corn, and peas as indicated by the results 
in tables xi-xix. Meanwhile, it had been determined from 
preliminary experiments that nutrient solutions of diverse con- 
stitution seem to be considerably influenced by the conditions 
under which the cultures were grown. There was, therefore, 
introduced into this series three sets of conditions. On account 
of the fact that other experiments were under way in the green- 
