LONDON, May 26.Dr. George Voronoff, noted gland specialist, has offered to perform a rejuve nation operation upon George Bernard Shaw but the latter has declined. The two met at a dinner last night and Voronoff spoke enthus iastically of gland operations. It was then he told Shaw that he would perform a rejuvenation operation at any time the noted writer “felt the first symptoms of old age.” Shaw thanked the doctor but added: “Think of the horror that would arise from the whole world at the ‘encore du Shaw.’ ~