ILLUSTRATIONS 
PLATE 1 
Representative cultures of the final comparative series, at the end of the: 
FIG. 
Fie. 
as 
2 
3. 
4 
5 
6 
4 
8. 
culture period. 
Four-salt type A, T1R2S2 (0.04 atmosphere). 
. Four-salt type A, T2R1S1 (0.08 atmosphere). 
Four-salt type A, T2R2S2 (0.08 atmosphere). 
. Four-salt type B, T2R1S2 (0.08 atmosphere). 
. Four-salt type B, T1R2S1 (0.04 atmosphere). 
. Three-salt type I (molecular proportions, increments of one-seventh 
R2S1 (0.00217 gram-molecule per liter, or 0.1 atmosphere). 
Three-salt type I (osmotic proportions, increments of one-tenth) 
R582 (0.1 atmosphere). 
Same as 7, but total concentration, 1.75 atmospheres. 
TEXT FIGURES 
. Diagram, showing relative values of top length for series 4, with 
3-salt solution type I (increments of one-seventh, total] concentra- 
tion of 0.0061 gram-molecules per liter or 0.23 atmosphere). 
Lightly shaded area includes best-balanced sets of salt propor- 
tions; heavily shaded area includes poorest sets. 
. Diagram, showing relative values of root length for series 4, with 
3-salt solution type I (increments of one-seventh, total concen- 
tration of 0.0061 gram-molecule per liter or 0.23 atmosphere). 
. Diagrams, showing good and poor sets of salt proportions for four 
plant forms. 
. Diagram, showing top-yield values for the thirty-five different 
sets of salt proportions, with low-medium total concentration. 
. Diagram, showing root-yield values for the thirty-five different sets 
of salt proportions, with low-medium total concentration. 
. Diagram, showing top-yield values for the thirty-five different sets 
of salt proportions, with high-medium total concentration. 
Diagram, showing root-yield values for the thirty-five different sets 
of salt proportions, with high-medium total concentration. 
. Diagram, showing distribution of low, medium, and high green- 
weight values for series 16 and 19 combined. 
. Diagram, showing distribution of low, medium, and high water- 
absorption values for series 16 and 19. 
525 
