38 



Journal of Agricultural Research 



15 



o 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 

 Concentration of salts in p. p. m. 



5. — Curve showing the effect of various combinations of salts in different concentrations on the 

 number of days to come up. Average of 13 combinations. 



o 1,000 2,000 3,000 4,000 5.000 6,000 7,000 8,000 9,000 10,000 

 Concentration of salts in p. p. m. 

 39. — Curve showing the effect of concentration of salts on the number of days to come up from seeds 

 of various kinds. Average for sodium ehlorid, sodium carbonate, and sodium sulphate. 



