+------------+----------
Meadow hay, 1-1/2 ton, | 49 | 12.3 | 50.9
|-----------+------------+----------
Wheat {Grain, 30 bushels | 33 | 16.0 | 9.8
{Straw | 15 | 4.7 | 25.9
|-----------+------------+----------
Total crop | 48 | 20.7 | 35.7
|-----------+------------+----------
Barley {Grain, 30 bushels | 35 | 16.0 | 9.8
{Straw | 13 | 4.7 | 25.9
|-----------+------------+----------
Total crop | 48 | 20.7 | 35.7
|-----------+------------+----------
Potatoes, 6 tons | 47 | 21.5 | 76.5
|-----------+------------+----------
Maize {Grain, 30 bushels | 28 | 10.0 | 6.5
{Stalks, &c. | 15 | 8.0 | 29.8
|-----------+------------+----------
Total crop | 43 | 18.0 | 36.3
----------------------------+-----------+------------+----------

From the table it will be seen that the crops which remove the largest
quantities of all three fertilising ingredients are the root
crops--mangels and turnips; that beans remove twice as much nitrogen as
the cereals--oats, barley, and wheat--which, in this respect,
practically differ very little from one another; while potatoes remove
about the same quantity of nitrogen as the cereals. It will further be
noticed that the amounts of phosphoric acid removed by the different
crops differ very much less than those of nitrogen and potash. Mangels
remove slightly more, and turnips slightly less, than double the amount
removed by cereals. Meadow-hay, it will be seen, of all crops removes
the least phosphoric acid.

In looking at the amounts of potash, we are at once struck by their
great discrepancy. Such a crop as mangels removes more than six times as
much potash from the soil as the cereals. Turnips also make large
demands on this ingredient, removing over four times as much as the
cereals. Leguminous crops, such as red clover and beans, remove about
twice as much.

_Capacity of Crops for assimilating Manures._

Instructive though these figures undoubtedly are, _they must not be
regarded, as often err