It has just been said that perfected ploughs rapidly spread in South Russia, and in many cases the village communities were instrumental in spreading their use. A plough was bought by the community, experimented upon on a portion of the communal land, and the necessary improvements were indicated to the makers, whom the communes often aided in starting the manufacture of cheap ploughs as a village industry. In the district of Moscow, where 1,560 ploughs were lately bought by the peasants during five years, the impulse came from those communes which rented lands as a body for the special purpose of improved culture. In the north-east (Vyatka) small associations of peasants, who travel with their winnowing machines (manufactured as a village industry in one of the iron districts), have spread the use of such machines in the neighbouring governments. The very wide spread of threshing machines in Samara, Saratov, and Kherson is due to the peasant associations, which can afford to buy a costly engine, while the individual peasant cannot. And while we read in nearly all economical treatises that the village community was doomed to disappear when the three-fields system had to be substituted by the rotation of crops system, we see in Russia many village communities taking the initiative of introducing the rotation of crops. Before accepting it the peasants usually set apart a portion of the communal fields for an experiment in artificial meadows, and the commune buys the seeds.(42) If the experiment proves successful they find no difficulty whatever in re-dividing their fields, so as to suit the five or six fields system. This system is now in use in hundreds of villages of Moscow, Tver, Smolensk, Vyatka, and Pskov.(43) And where land can be spared the communities give also a portion of their domain to allotments for fruit-growing. Finally, the sudden extension lately taken in Russia by the little model farms, orchards, kitchen gardens, and silkworm-culture grounds--which are started at the village school-houses, under the conduct of the school-master, or of a village volunteer--is also due to the support they found with the village communities.