barfy Growth m Cms. 
Gp JT- Evaporation in C.C. 
G/>-T- Gp. TZ 
Fig. 9. Daily growth-rate of four groups of plants. Evaporation and rainfall. Gp. I. Not 
drained. 10,000 c.c. of water, 2 c.c. of 3 per cent. H 2 0 2 added daily from October 17. Gp. II. 
Not drained. Gp. III. Drained. Gp. IV. Drained. Linoleum sheet placed on soil on October 16. 
