By its assistance the farmer will know how many loads of manure he requires, dividing each load into a stated number of heaps, and placing them at certain distances. In this manner manure may be applied evenly, and calculation may be made as to the amount, per acre, which a certain quantity will supply.[AF] ---------+--------------------------------------------------------------------- DISTANCE | OF | THE | NUMBER OF HEAPS IN A LOAD. HEAPS. | ---------+------+------+------+------+------+------+------+------+------+------ | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 ---------+------+------+------+------+------+------+------+------+------+------ 3 yards. |538 |269 |179 |134 |108 |89-1/2|77 |67 |60 |54 3-1/2 do.|395 |168 |132 |99 |79 |66 |56-1/2|49-1/2|44 |39-1/2 4 do. |303 |151 |101 |75-1/2|60-1/2|50-1/2|43-1/4|37-3/4|33-1/2|30-1/4 4-1/2 do.|239 |120 |79-1/2|60 |47-3/4|39-3/4|34-1/4|30 |26-1/2|24 5 do. |194 |97 |64-1/2|48-1/2|38-3/4|32-1/4|27-3/4|24-1/4|21-1/2|19-1/4 5-1/2 do.|160 |80 |53-1/2|40 |32 |26-3/4|22-3/4|20 |17-3/4|16 6 do. |131 |67 |44-3/4|33-1/2|27 |22-1/2|19-1/4|16-3/4|15 |13-1/2 6-1/2 do.|115 |57-1/2|38-1/4|28-3/4|23 |19 |16-1/4|14-1/4|12-3/4|11-1/2 7 do. |99 |49-1/2|33 |24-3/4|19-3/4|16-1/2|14 |12-1/4|11 |10 7-1/2 do.|86 |43 |28-3/4|21-1/2|17-1/4|14-1/4|12-1/4|10-3/4| 9-1/2| 8-1/2 8 do. |75-1/2|37-3/4|25-1/4|19 |15-3/4|12-1/2|10-3/4| 9-1/2| 8-1/2| 7-1/2 8-1/2 do.|67 |33-1/2|22-1/4|16-3/4|13-1/2|11-1/4| 9-1/2| 8-1/2| 7-1/2| 6-3/4 9 do. |60 |30 |20 |15 |12 |10 | 8-1/2| 7-3/4| 6-3/4| 6 9-1/2 do.|53-1/2|26-3/4|18 |13-1/2|10-3/4| 9 | 7-3/4| 6-3/4| 6 | 5-1/4 10 do. |48-1/2|24-1/4|16-1/4|12 | 9-3/4| 8 | 7 | 6 | 5-1/2| 4-3/4 ---------+------+------+------+------+------+------+------+------+------+------ _Example 1._--Required, the number of loads necessary to manure an acre of ground, dividing each load into six heaps, and placing them at a distance of 4-1/2 yards from each other? The answer by the table is 39-3/4. _Example 2._--A farmer has a field containing 5-1/2 acres, over which he wishes to spread 82 loads of dung. Now 82 divided by 5-1/2, gives 15 loads per acre; and by referring to the table, it will be seen that the desired object may be accomplished, by making 4 heaps of a load, and placing them 9 yards apart, or by 9 heaps at 6 yards, as may be thought advisable. FOOTNOTES: [AC] Under some circumstances, _nitric acid_ is formed, which is equally beneficial to vegetable growth. [AD] See the glossary at the end of the book. [AE] Working Farmer, vol. 1, p. 55. [AF] It is not necessary that this and the foregoing table should be learned by the scholar, but they will be found valuable for reference by the farmer. CHAPTER VIII. MINERAL MANURES. [How many kinds of action have inorganic manures?