Физический институт How Was Built the Main Building of the Saratov Physicists Authors: Ignatiev A. A., Danke O. G. The construction history of the Third building of Saratov University (Institute of Physics) that has been officially opened on October 4, 1914 (old style) is described. Physical Institute of Emperor Nicholas University in Saratov Authors: Zernov V. D. The article by Prof. Vladimir D. Zernov from Journal Physical Review (Russia, 1916) is reprinted.