Using shape-holding spline for valuation of land admeasurement density between farms after the reforms of 1863

In the article with the help of non-interpolating spline - approximation methods there are built evaluations of land admeasurements density functions and their particular categories after the Reform of 1863.The degree of rural population differentiation in the European Russia is estimated by comparing parameters of gained continuous distributions. The research is implemented under inter-disciplinary program of the Urals Department of RAS Historical dynamics of Russia: factors, models, forecast.