Joseph Hamilton Lambert the formerly productive trees. Lambert introduced new horticulture methods that in two years restored the health of the trees and again allowed them to produce "mammoth" crops of apples. Lambert became the sole owner of the orchards, which are notable for being the first to produce cultivated fruit in Oregon. Lambert developed what became known as the Lambert cherry, by grafting a volunteer seedling, found in 1848 under a Napoleon cherry tree to the rootstock of a May Duke cherry. The crown of the tree died in 1880 and a new tree grew from its roots that was not a
Varieties of Chinese increase, although there are also some sharp boundaries. However, the rate of change in mutual intelligibility varies immensely depending on region. For example, the varieties of Mandarin spoken in all three northeastern Chinese provinces are mutually intelligible, but in the province of Fujian, where Min varieties predominate, the speech of neighbouring counties or even villages may be mutually unintelligible. Classifications of Chinese varieties in the late 19th century and early 20th century were based on impressionistic criteria. They often followed river systems, which were historically the main routes of migration and communication in southern China. The first scientific classifications, based