Fragments of the ceremonial meeting at the Bolshoi Theater of the USSR, dedicated to the 100th anniversary of the birth of the scientist-physiologist I. P. Pavlov (Moscow). Among those present: S.I. Vavilov, N.S. Derzhavin, N.D. Zelinsky, T. D. Lysenko, A.N. Nesmeyanov, L.A. Orbeli, K.M. Bykov.