4 o 
Journal of Agricultural Research 
Vol. V, No. i 
Fig. 43.— Curve showing the height of wheat plants germinating in College loam, Greenville loam, and 
sand containing various salts. Average for all concentrations. 
o i,ooo a ,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 
Concentration of salts in p. p. m. 
Fig. 43.—Curve showing the effect of various combinations of salts in different concentrations on the height 
of plants. Average of 15 combinations of each group of 3 salts. 
