I find error concealed every where under general propositions. The children of the poor, says one, thrive better than those of the rich. If it be so, it ought not to be so in common reason. But the same person will tell you, I have made my son a merchant; he will be a rich man. Why? Because (A B) was a merchant, who, from nothing, died worth a hundred thousand pounds. But if you go through all the letters of the alphabet following (A B), among those who set out as he did, you will find, that perhaps every one of them died a bankrupt. Those who prove successful are remarkable: those who miscarry are never heard of. It is just so with respect to the question before us. But to return to our tables, and what are called calculations.
One marriage produces four children at a medium in England. If you reckon 6,000,000 of people in that country, and that 1⁄30 part dies annually, then to keep up the stock it is sufficient that 200,000 be annually born; add to this the yearly increase of 9000, the total of births will then be 209,000: for if 200,000 die this year, and if 209,000 be born, this must certainly imply an increase of 9000, providing we suppose the acquisition of foreigners to be equal to the exportation of the natives. As this is only meant as an illustration, I need not examine the matter of fact. The next question is, how many marriages, properly contracted or encouraged as above, will give this increase? For we may know that these subsisting in that kingdom, joined with the effects of extramatrimonial conjunctions, is just sufficient to produce it. I imagine that nothing but experiment can give the solution of this question. Mr. King supposes every 104th person in England to marry yearly, that is 57,682 persons, or 28,841 couples. If this number of marriages be supposed to subsist with fertility for seven years, producing a child every year, the number of 200,000 births would be procured; but I apprehend that marriages, rightly contracted, subsist much longer in general than seven years, even with fertility, though not in proportion to a child every year: consequently, the number of marriages constantly subsisting with fertility in England, where it is supposed that 28,841 are yearly contracted, must be much greater than seven times that number, or than 201,887[201,887]. If we suppose the whole of the 209,000 births to be produced by marriages, at three marriages to every child annually produced, then the number of marriages subsisting will be 627,000. From these speculations (for I do not pretend to call them calculations) I conclude, that the more fruitful marriages are rendered (not with regard to procreation, merely, but multiplication, which I have above distinguished) the fewer become necessary; and the fewer unnecessary marriages are contracted, the better for the state, and the less misery for those who contract them. I shall here stop, and leave to the reader to draw his conclusions, putting him in mind of the wide difference that is always found between theory and practice.
From this reasoning I infer, that no exact judgment can be formed, as to the numbers in any society, from the single datum of the annual number of deaths among them; and although the just proportion between numbers and deaths may exactly be determined in one particular place, yet that proportion will not serve as a general standard, and being taken for granted may lead to error.
Here are the reasons for my opinion.
Were no body to marry but such as could maintain their children, the bills of births and burials would, I apprehend, diminish, and yet numbers might remain as before; and were every body to marry who could procreate, they certainly would increase, but still numbers would never exceed the proportion of subsistence. Could we but see bills of births and deaths for the city of Rome, while in all its glory; or indeed for the sugar colonies in America, where slaves are imported, adding the number of those imported to that of births, and supposing the colony neither upon the growing nor the declining hand, then the deaths and births would be equal; but the proportion of them to all in the colony, I apprehend, would be far less than in any state in Europe, where slavery does not prevail.
It may be alledged, that were all to marry, the consequence would be a great multiplication. I say not; or if it were, what sort of multiplication would it be? A multitude of children who never could come to manhood; or who would starve their parents, and increase misery beyond expression. All therefore that can be learned from bills of mortality, &c. is, that if the births exceed the deaths, and that all remain in the country, numbers will increase; that if the deaths exceed the births, numbers will diminish; but while they stand at par, no conclusion can be drawn as to numbers in general: these will be in a less proportion as abusive procreation goes forward; and, vice versa, they will be in a greater. There still hangs a cloud upon this subject: let me therefore reason upon an example. Suppose the inhabitants of a country to stand at 6,000,000, one thirtieth to die every year, and as many to be born, that is, the births and burials to stand at 200,000; that every three marriages subsisting produce a child every year, that is 600,000 marriages; let the quantity of food be supposed the same, without a possibility of being augmented. Would not the consequence be, that numbers could not increase? Now let me suppose marriages carried to 1,000,000, I say the effect would be, either that they would become in general less fruitful, or if they suffered no diminution in this particular, that the bills of births and deaths would rise to 333,333; that is to say, they would be to the number of inhabitants as 1 to 18, instead of being as 1 to 30. Now this increase of mortality proceeding from want of food, either the old would starve the young, or the young would starve the old; or a third case, more probable than either, would happen, the rich would starve the poor. What would be the consequences in all these three suppositions? In the first, the number of 6,000,000 would be found to diminish; because the proportion of large consumers would rise, and mortality would increase among the children. In the second, the standard number would augment, because the proportion of small consumers would rise, and mortality would increase among the parents. In the third, numbers would remain pretty much the same, but misery and distress would lay all the lower classes waste. It is computed that one half of mankind die before the age of puberty in countries where numbers do not augment; from this I conclude, that too many are born. If methods therefore are fallen upon to render certain diseases less mortal to children, all the good that will be got by it, in general, will be to render old people of the lower classes more wretched; for if the first are brought to live, the last must die.
From these speculations I cannot help wishing to see bills of mortality made out for different classes, as well as for different ages. Were this executed it would be an easy matter to perceive, whether the mortality among children proceeds from diseases to which infancy is necessarily exposed, or from abusive procreation. I am pretty much convinced before I see the experiment, that it proceeds from the latter; but should experience prove it, the principles I have laid down would acquire an additional force. In the mean time, I must conclude, that it is not for want of marrying that a people does not increase, but from the want of subsistence; and it is miserable and abusive procreation which starves one half of the whole, and is the fountain of so much wretchedness.
Upon the whole, I may say, that were it possible to get a view of the general state of births and burials in every class of the inhabitants of a country, marriage might surely be put upon a better footing than ever it has been, for providing a determined number of good and wholesome recruits every year towards national multiplication. This is walking in the light, and is a means of procuring whatever augmentation of hands you wish for. What difficulties may be found in the execution, nothing but experience can shew; and this, to a judicious eye, will point out the remedy. In my opinion, this will be far better than a general naturalization, which I take to be a leap in the dark. For however easy it may be to naturalize men, I believe nothing is so difficult as to naturalize customs and foreign habits; and the greatest blessing any nation can enjoy, is an uniformity of opinion upon every point which concerns public affairs and the administration of them. When God blesses a people, he makes them unanimous, and bestows upon them a governor who loves them, and who is beloved, honoured and respected by them; this, and this only, can create unanimity.
Let this suffice at present, as to the distribution, employment, and increase of a people. Upon the proper employment of the free hands, the prosperity of every state must depend: consequently the principal care of a statesman should be, to keep all employed, and for this purpose he must acquire an exact knowledge of the state of every denomination, in order to prevent any one from rising above, or sinking below that standard which is best proportioned to the demand made for their particular industry. As the bad consequences resulting from the loss of this exact balance are not immediate, a moderate attention, with the help of the proper recapitulations, will be sufficient to direct him.
This and the two preceding chapters have in a manner wholly treated of the employment of the free hands: I must now consider the effects of an overcharge of those employed in agriculture. Here we shall still discover inconveniencies, resulting from the want of that just proportion in the distribution of classes, which gives health and vigour to a state; and we shall see how it may happen, that even an overcharge of inhabitants in general may become a political disease; as an abundance of blood, however rich and good, may affect the health of the human body.