. Fig. 4. Effect of Lime. a. to d. R hubarb, e. to ^. New Zealand Spinach, a. and 6., e. and /. both receiving sulphate of ammonia, a. and e. unlimed, 6. and/, limed, c. and </.. g. and h. both received nitrate of snda, c. and g. unlimed, d. and /;. limed (after Hartwell and Damon''.

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