Jefferson had his share of all these social pleasures, together with others, but there were also simpler and more austere occupations. First of all he had to look after his plantation. Agriculture, so long a haphazard and empirical affair, was making great strides in Europe, particularly in England. Treatises on the subject and special magazines were read eagerly in Virginia; the choice of cultures, the improvement of seeds, the introduction of new crops greatly concerned the minds of progressive planters like Colonel Washington and the young master of Shadwell. The "Garden Books" kept by Jefferson and now published only in part, reveal him as a forerunner of modern efficiency engineers. Fences, walls, roads and bridges had to be built on the 1900-acre estate left him by his father; trees had to be planted and vegetables raised for the large family at Shadwell, for the slaves and for the many travelers and visitors who continued to drop in. If all the seeds planted in Jefferson's vegetable garden and orchards did well, he must have had an extraordinary variety of produce, considerably larger than is to be found on the best appointed farms of to-day. For he was not satisfied with the staple vegetables which appear on the American table with clocklike regularity; he sowed "salsifia, peppergrass, sorrel, salmon radishes, nasturtium, asparagus, all sorts of lettuce, cresses, celery, strawberries, snap-beans, purple beans, white beans, sugar beans, cucumbers, watermelons, cherries, olive stones, raspberries, turnips", and--horrors!--garlic. He was led into many such experiments by his neighbor and friend Philip Mazzei, formerly of Tuscany and now of Albemarle County, for many of the entries in the Garden Book are in Italian and "_aglio de Terracina_ (_vulgo_ garlic), _radiocchio di Pistoia_ (succory or wild endive), _cavolo broccolo Francese di Pisa, fragole Maggese_ (May strawberries)" and dozens of other imported varieties appear in his garden lists. Then there were the horses, for, true to the Virginia tradition, Jefferson kept no less than half a dozen blood mares of good pedigree. Above all, the regular crops of wheat, corn and especially tobacco had to be looked after; for tobacco was the only crop that could be marketed for solid cash or sent to London to be exchanged for books, furniture, fine clothes, musical instruments, and the choice wines of Europe. As a practical farmer Jefferson was rather successful, since during these early years his land brought him an average return of two thousand dollars. This was ample for his needs. But his main resources were procured from the practice of law.