As the population increases and land becomes less plentiful, the primitive method of agriculture above alluded to gives place to a less primitive method, commonly known as "the three-field system,"
according to which the cultivators do not migrate periodically from one part of the communal territory to another, but till always the same fields, and are obliged to manure the plots which they occupy.
The principle of communal property rarely survives this change, for by long possession the families acquire a prescriptive right to the portions which they cultivate, and those who manure their land well naturally object to exchange it for land which has been held by indolent, improvident neighbours. In Russia, however, this change has not destroyed the principle of communal property. Though the three-field system has been in use for many generations in the central provinces, the communal principle, with its periodical re-
allotment of the land, still remains intact.
For the student of sociology the past history and actual condition of the Don Cossacks present many other features equally interesting and instructive. He may there see, for instance, how an aristocracy can be created by military promotion, and how serfage may originate and become a recognised institution without any legislative enactment. If he takes an interest in peculiar manifestations of religious thought and feeling, he will find a rich field of investigation in the countless religious sects; and if he is a collector of quaint old customs, he will not lack occupation.
One curious custom, which has very recently died out, I may here mention by way of illustration. As the Cossacks knew very little about land-surveying, and still less about land-registration, the precise boundary between two contiguous yurts--as the communal land of a stanitsa was called--was often a matter of uncertainty and a fruitful source of disputes. When the boundary was once determined, the following method of registering it was employed.
All the boys of the two stanitsas were collected and driven in a body like sheep to the intervening frontier. The whole population then walked along the frontier that had been agreed upon, and at each landmark a number of boys were soundly whipped and allowed to run home! This was done in the hope that the victims would remember, as long as they lived, the spot where they had received their unmerited castigation. The device, I have been assured, was generally very effective, but it was not always quite successful.
Whether from the castigation not being sufficiently severe, or from some other defect in the method, it sometimes happened that disputes afterwards arose, and the whipped boys, now grown up to manhood, gave conflicting testimony. When such a case occurred the following expedient was adopted. One of the oldest inhabitants was chosen as arbiter, and made to swear on the Scriptures that he would act honestly to the best of his knowledge; then taking an Icon in his hand, he walked along what he believed to be the old frontier. Whether he made mistakes or not, his decision was accepted by both parties and regarded as final. This custom existed in some stanitsas down to the year 1850, when the boundaries were clearly determined by Government officials.
A custom of this kind, I am told, existed not very long ago in England and is still spoken of as "the beating of the bounds.".