All this may appear as an extreme statement; and certainly we believe that no such evils could have happened: for if the laws had been passive, the most ignorant of the labourers themselves would, if they had proceeded to carry their own principle much farther than they had done, see in their very excesses the real character of the folly and wickedness to which it had led, and would lead them. Why should the labourers of Aylesbury not have destroyed the harrows as well as the drills? Why leave a machine which separates the clods of the earth, and break one which puts seed into it? Why deliberate about a horse-churn, when they were resolved against a winnowing-machine? The truth is, these poor men perceived, even in the midst of their excesses, the gross deception of the reasons which induced them to commit them. Their motive was a natural, and, if lawfully expressed, a proper impatience, under a condition which had certainly many hardships, and those hardships in great part produced by the want of profitable labour. But in imputing those hardships to machinery, they were at once embarrassed when they came to draw distinctions between one sort of machine and another. This embarrassment decidedly shows that there were fearful mistakes at the bottom of their furious hostility to machinery.
It has been said, by persons whose opinions are worthy attention, that spade-husbandry is, in some cases, better than plough-husbandry;--that is, that the earth, under particular circumstances of soil and situation, may be more fitly prepared for the influences of the atmosphere by digging than by ploughing. It is not our business to enter into a consideration of this question. The growth of corn is a manufacture, in which man employs the chemical properties of the soil and of the air in conjunction with his own labour, aided by certain tools or machines, for the production of a crop; and that power, whether of chemistry or machinery,--whether of the salt, or the chalk, or the dung, or the guano, which he puts upon the earth, or the spade or the plough which he puts into it,--that power which does the work easiest is necessarily the best, _because it diminishes the cost of production_. If the plough does not do the work so well as the spade, it is a less perfect machine; but the less perfect machine may be preferred to the more perfect, because, taking other conditions into consideration, it is a cheaper machine. If the spade, applied in a peculiar manner by the strength and judgment of the man using it, more completely turns up the soil, breaks the clods, and removes the weeds than the plough, which receives one uniform direction from man with the assistance of other animal power, then the spade is a more perfect machine in its combination with human labour than the plough is, worked with a lesser degree of the same combination. But still it may be a machine which cannot be used with advantage to the producer, and is therefore not desirable for the consumer. All such questions must be determined by the cost of production; and that cost in agriculture is made up of the rent of land, the profit of capital, and the wages of labour--or the portions of the produce belonging to the landlord, the farmer, and the labourer. Where rent is high, as in the immediate neighbourhood of large towns, it is important to have the labour performed as carefully as possible, and the succession of crops stimulated to the utmost extent by manure and labour. It is economy to turn the soil to the greatest account, and the land is cultivated as a garden. Where rent is low, it is important to have the labour performed upon other principles, because one acre cultivated by hand may cost more than two cultivated by the plough; and though it may be the truest policy to carry the productiveness of the earth as far as possible, field cultivation and garden cultivation must have essential differences. In one case, the machine called a spade is used; in the other, the machine called a plough is employed. The use of the one or the other belongs to practical agriculture, and is a question only of relative cost.