  We give a short introduction to the calculation of the leading chiral
logarithms, and present the results of the recent evaluation of the leading
logarithm series for the nucleon mass within the heavy baryon theory. The
presented results are the first example of leading logarithm calculation in the
nucleon ChPT. We also discuss some regularities observed in the leading
logarithmical series for nucleon mass. The talk has been presented at "Quark
Confinement and the Hadron Spectrum XI".
