all the improvements of industry result only in the enrichment of the landlord.... The value of our products has increased since 1850 to the extent of some twenty-eight billions of dollars, while rent has gained less than three billions. Evidently it has captured but a meagre part of the new production."[65] There are strong indications, however, that the per cent. of the product going to the owners of land has increased considerably in the last twenty years, and that this movement will continue indefinitely. According to Professor King's calculations, the per cent. of the total product assignable as rent advanced from 7.8 in 1900 to 8.8 in 1910, which meant that during that period the national income increased only 70 per cent., while the share of the landowner increased 91 per cent.[66] It is true that a disproportionate advance in rent has occurred between other census years, only to be neutralised by subsequent decreases; but the present instance seems to include certain features which did not characterise any of the former gains in the relative share of the landowner. Since 1896 the prices of food products "rose most rapidly in the case of meat, dairy products, and cereals, which were derived directly from the land. The prices of raw materials show a like relation. Timber, grain, and other raw materials obtained directly from the land have risen rapidly in price, while semi-manufactured articles have increased less rapidly, or have decreased in price.... There is no parallel in any other field to the advance in those land values upon which civilisation most directly depends--timber lands, fertile agricultural land, and land in large commercial and industrial centres. The recent rise in land values has been little short of revolutionary."[67]