In fact, after having studied the most simple glass shelters of Guernsey, we affirm that, taking all in all, far less work is expended for obtaining potatoes under glass in April, than in growing them in the open air, which requires digging a space four times as large, watering it, weeding it, etc. Work is likewise economized in employing a perfected tool or machine, even when an initial expense had to be incurred to buy the tool.

Complete figures concerning the culture of common vegetables under glass are still wanting. This culture is of recent origin, and is only carried out on small areas. But we have already figures concerning the fifty years old culture of early season grapes, and these figures are conclusive.

In the north of England, on the Scotch frontier, where coal only costs 3s. a ton at the pit's mouth, they have long since taken to growing hot-house grapes. Thirty years ago these grapes, ripe in January, were sold by the grower at 20s. per pound and resold at 40s. per pound for Napoleon III.'s table. To-day the same grower sells them at only 2s. 6d. per pound. He tells us so himself in a horticultural journal. The fall in the prices is caused by the tons and tons of grapes arriving in January to London and Paris.

Thanks to the cheapness of coal and an intelligent culture, grapes from the north travel now southwards, in a contrary direction to ordinary fruit. They cost so little that in May, English and Jersey grapes are sold at 1s. 8d. per pound by the gardeners, and yet this price, like that of 40s. thirty years ago, is only kept up by slack production.

In March, Belgium grapes are sold at from 6d. to 8d., while in October, grapes cultivated in immense quantities—under glass, and with a little artificial heating in the environs of London—are sold at the same price as grapes bought by the pound in the vineyards of Switzerland and the Rhine, that is to say, for a few halfpence. Yet they still cost two-thirds too much, by reason of the excessive rent of the soil and the cost of installation and heating, on which the gardener pays a formidable tribute to the manufacturer and the middleman. This being understood, we may say that it costs "next to nothing" to have delicious grapes under the latitude of, and in our misty London in autumn. In one of the suburbs, for instance, a wretched glass and plaster shelter, nine feet ten inches long by six and one-half feet wide, resting against our cottage, gave us about fifty pounds of grapes of an exquisite flavour in October, for nine consecutive years. The crop came from a Hamburg vine-stalk, six year old. And the shelter was so bad that the rain came through. At night the temperature was always that of outside. It was evidently not heated, for it would have been as useless as heating the street! And the care which was given was: pruning the vine, half an hour every year; and bringing a wheel-barrowful of manure, which was thrown over the stalk of the vine, planted in red clay outside the shelter.

On the other hand, if we estimate the amount of care given to the vine on the borders of the Rhine of Lake Leman, the terraces constructed stone upon stone on the slopes of the hills, the transport of manure and also of earth to a height of two or three hundred feet, we come to the conclusion that on the whole the expenditure of work necessary to cultivate vines is more considerable in Switzerland or on the banks of the Rhine than it is under glass in London suburbs.

This may seem paradoxical, because it is generally believed that vines grow of themselves in the south of Europe, and that the vine-grower's work costs nothing. But gardeners and horticulturists, far from contradicting us, confirm our assertions. "The most advantageous culture in England is vine culture," wrote a practical gardener, editor of the "English Journal of Horticulture" in the Nineteenth Century. Prices speak eloquently for themselves, as we know.

Translating these facts into communist language, we may assert that the man or woman who takes twenty hours a year from his leisure time to give some little care—very pleasant in the main—to two or three vine-stalks sheltered by simple glass under any European climate, will gather as many grapes as their family and friends can eat. And that applies not only to vines, but to all fruit trees.

The Commune that will put the processes of intensive culture into practice on a large scale will have all possible vegetables, indigenous or exotic, and all desirable fruits, without employing more than about ten hours a year per inhabitant.