16-6 Espino: Salt Requirements of Young Rice Plants 5Q7 
the green-weight criteria for these four simultaneous series with 
young rice plants; for these cultures the dry yields of tops are 
also available, as has been shown. For the sake of this com- 
parison Table 12 has been prepared. On account of the nu- 
merous discrepancies among the indications from repeated series 
it seems best not to consider any dry yield data here excepting 
those of the four simultaneous series in question, where the pro- 
posed comparisons may be made directly and without any compli- 
cations introduced by differences in climatic and other non- 
Table 12 . — Comparison between dry yield and green weight of tops, as 
to the indicatio7is from the four simultaneous series (H, 16, 19, and 
20), beginning June 19. 
