cultivation, and the barreness of those that are not cultivated, will be very much disposed to doubt, whether the whole average produce could possibly be doubled in twenty-five years from the present period. The only chance of success would be the ploughing up all the grazing countries, and putting an end almost entirely to the use of animal food. Yet a part of this scheme might defeat itself. The soil of England will not produce much without dressing; and cattle seem to be necessary to make that species of manure, which best suits the land. In China, it is said, that the soil in some of the provinces is so fertile, as to produce two crops of rice in the year without dressing. None of the lands in England will answer to this description.
Difficult, however, as it might be, to double the average produce of the island in
