Comment on ``Dependence of Gravitational Action on Chemical Composition:   New Series of Experiments" by M. Nanni [Apeiron v. 7, No. 3-4, pp. 195-201]
  In our comment we show that the application of appropriate statistical methods to the results of the author proves that the author in his article has not been able to reach his goal. 
R. I. Tzontchev and A. E. Chubykalo