

II aniiaiiB o d 



No. 1, Nutrient sol.; No. 2, Nutrient sol.+CaCOs; No. 3, Nutrient sol.+CaS04; No. 4, 

 Nutrient sol. +2 c.e. Al sol.; No. 5, same as No. 4+CaC03; No. 6, same as No. 

 4+CaS04; No. 7, Nutrient sol.+l c.c. Al sol.; No. 8, same as No. 7+CaC03; No. 9. 

 same as No. T+CaSOi. 





; y ^f*^ ^^^-^ 



No. 4, 



No. 1, Nutrient sol.; No. 2, Nutrient sol.+CaC03; No. 3, Nutrient sol.+CaSOj 



Nutrient sol. +5 c.c. Fe sol.; No. 5, same as No. 4+CaC03; No. 6, same as 

 No. 4+CaS04; No. 7, Nutrient sol. +2 c.c. Fe sol.; No. 8, same as No. 7+CaCo,i; 

 No. 9, same as No. 74-CaSOi; No. 10, Nutrient sol.+ l c.c. Fe sol.; No. 11, same as 

 No. lO+CaCOa; No. 12, same as No. 10+CaSO4. 



