"Let us take, for example, the orchard—the marais—of M. Ponce, the author of a well known work on the culture maraîchere.., covered only two and seven-tenths acres. The outlay for his establishment, including a steam engine for watering... reached £1,136. ...[W]hen returning from Paris they brought in manure, for which £100 was spent every year. Another £100 was spent on rent and taxes. But how to enumerate all that was gathered every year... More than 20,000 pounds of carrots... 20,000 pounds of onions, radishes and other vegetables... 6,000 heads of cabbage; 3,000 of cauliflower; 5,000 baskets of tomatoes, 5,000 dozen of choice fruit; and 154,000 heads of salad; in short, a total of 250,000 pounds of vegetables. The soil was made to such an amount out of forcing beds that every year 250 cubic yards of loam had been sold. Similar examples could have been given by the dozen... No less than 2,125 acres are cultivated round Paris in that way by 5,000 persons, and thus not only the 2,000,000 Parisians are supplied with vegetables, but the surplus is also sent to London."