Dr Ghosh has made significant contributions to theoretical statistics in several directions. He has extended the results of Fisher and Rao on the second order efficiency of maximum likelihood estimators. Using refined analytical tools he has obtained useful results in the asymptotic expansion of the distribution of sample statistics. In the matter of applications of probabilistic methods, he has made an excellent contribution to the understanding of sediment transport in fluid flows through stochastic models. Earlier, he had proved under very general conditions that in reducing a problem through sufficiency and invariance, the order in which these criteria are applied is immaterial.