From this time on, its cultivation gradually extended throughout Europe. In England, especially, the cauliflower, as well as the broccoli, became a popular garden vegetable. Philip Miller, in his "Gardener's Dictionary," published in 1741, gives a long description of the method of growing this vegetable, though mentioning but one variety, while several varieties of broccoli are described. He says, however, that "cauliflowers have of late years been so far improved in England as to far exceed in goodness and magnitude what are produced in most parts of Europe." Prior to the French Revolution, (which began in 1778) cauliflower had, in fact, come to be largely exported from England into Holland, Germany and France; but soon after this it came to be more generally grown in those countries and was no longer imported, though English seed was still used. The numerous varieties of cauliflower now cultivated are of comparatively recent origin. Although some of the earliest writers on this vegetable mention two or more varieties, these were in some cases merely different crops produced by sowing the seed at different periods. In 1796, Marshall, in his English work on gardening, says that "cauliflower is sometimes distinguished into an early and late sort; though in fact there is no difference, only as the seed of that called 'early' is saved from the foremost plants." Phillips, in 1822, said: "Our gardeners furnish us with an early and a late variety, both of which are much esteemed." In 1831, Don, of England, in his work on botany and gardening ("History of Dichlamydeous Plants") describes fifteen varieties of broccoli and three of cauliflower. The latter were known as Early, Later or Large, and Red, the last being the most hardy. These three kinds differed but little in general character, and were all inclined to sport into inferior varieties. In 1832 there was still a discussion in England as to whether the early and late cauliflowers were really distinct, or differed only in time of sowing.