With regard to both of these questions it should be distinctly understood that absolute accuracy is impossible; and I have given the statistics in round numbers only. But, for the purpose for which the figures are quoted, approximate accuracy is as useful as absolute accuracy, even were the latter attainable; and every attempt to correct the figures as given in this volume has only served to show how substantially accurate these figures are, and how totally unaffected would be the argument, even were any of the suggested corrections accepted. The landed rental of the country is given by me as something under _a hundred million pounds_. It has been asserted that were the ground-rents in towns properly estimated, the true rental would be found to be _a hundred and fifty million pounds_ or _a hundred and eighty million pounds_. It is no doubt difficult to differentiate in town properties the total rental from the ground rental; but the most recent investigations made into this question, so far as it affects London, will throw light on the question as a whole. The highest estimate of the present ground-rental of London as related to the total rental gives the proportion of the former to the latter as _fifteen_ to _forty_. Now house rent in London is higher than in any other town in the kingdom; therefore, if we assume the same proportion to obtain in all other towns, we shall be over-estimating the ground-rent of the country as a whole, instead of underestimating it. If we take this extreme calculation—which is obviously too great—it will be found to yield a result as to the total landed rental exceeding only by ten per cent that given in this volume. It will therefore be easily seen that the figures given by me are substantially accurate, and sufficiently accurate for all purposes of political and social argument. Precisely the same thing is to be said with regard to the figures given as to the growth of the national income and the capitalised value of the country. The estimates of various statisticians will be found to differ from one another by something like ten per cent; but these differences do not in the least affect the essential character and meaning of the great facts in question. Let us take, for instance, two facts stated in this volume—that the capital of the country during the past century has increased in the proportion of _two_ to _ten_; and the income per head of the country in the proportion of _fourteen_ to _thirty-four_ or _thirty-five_. We will suppose some critic to prove that these proportions should be _three_ to _eleven_, or _twelve_ to _thirty-three_. Now, large as the error thus detected might be from some points of view, it would be absolutely immaterial to the large and general question in connection with which the figures are quoted in this volume.