Saddling the Dragon tells the story of Mr. Ivan Efremov. He was a writer, scientist, geologist and paleontologist. He took part in 31 expeditions headed 26 of them. In the early postwar years professor Efremov discovered a dinosaurs` burial place in Mongolia. The writer Alexei Tolstoy admired Efremov`v prose. In his "Diamond pipe" he predicted the location of Yakutia diamonds. Efremov also predicted holography.