149 - [WORKS FROM THE WORLD WAR I PERIOD]

[WORKS FROM THE WORLD WAR I PERIOD] ARCHIVES of Dimitri RIABOUCHINSKY RIABOUCHINSKY, Dimitri (1882–1962) A unique selection of works by D.P. Riaboushinski, offering insight into his scientific activity on the eve of the revolution. Includes: • On the Reaction of a Gas Jet. Lecture by D.P. Riabouchinsky, director of the Kuchino Institute of Aerodynamics and privat-docent at the Imperial University of Moscow. Lecture delivered at the Moscow Mathematical Society on December 20, 1916. In Russian, a rotary-printed copy of the manuscript, 20 pp. (partially stitched), 35 x 22 cm, as is. • On Air Resistance. Lecture by D.P. Riabouchinsky, director of the Kuchino Institute of Aerodynamics, lecturer at the Imperial University of Moscow. No specific date or location of presentation given. In Russian, a typeset copy of the manuscript; part of the text is handwritten, one drawing is hand-drawn, and there is one handwritten addendum page; 10½ pp. in total, 36 × 25 cm, as is (tears along the edges). • On the influence of wind on the location of a battery based on the sound of a gunshot. Copy of the manuscript by D.P. Riabouchinsky, director of the Kuchino Institute of Aerodynamics, privat-docent at the Imperial University of Moscow. Kuchino, July 3, 1917. In Russian, mimeographed copy, 6 pp., 35 × 25 cm, as is; On the influence of wind on the location of a battery based on the sound of a gunshot. Copy of the manuscript by D. P. Riabouchinsky, director of the Kuchino Institute of Aerodynamics and private lecturer at the Imperial University of Moscow. Kuchino, July 3, 1917. In Russian, a copy printed on a rotary press, 17 pp. (including the table of contents and conclusion), various formats, as is. We are including the envelope, annotated by D. P. Riabushinsky, in which the manuscripts were kept. [WORKS FROM THE FIRST WORLD WAR PERIOD] ARCHIVE OF DMITRY RYABUSHINSKY RYABUSHINSKY, Dmitry (1882–1962) A unique collection of works by D. P. Riabushinsky, providing insight into his scientific activities on the eve of the revolution. Includes: • On the Reaction of a Gas Jet. A report by D. P. Ryabushinsky, Director of the Aerodynamic Institute in Kuchino and Privat-Dozent at the Imperial Moscow University. The paper was presented at the Moscow Mathematical Society on December 20, 1916. In Russian, a mimeographed copy of the manuscript, 20 pages (partially bound), 35 × 22 cm, in good condition. • On Air Resistance. Lecture by D.P. Ryabushinsky, Director of the Aerodynamic Institute in Kuchino and Privat-Dozent at the Imperial Moscow University. No specific date or location of the lecture is given. In Russian, a copy of the manuscript produced on a rotary press; part of the text is handwritten; one drawing is hand-drawn; one page of handwritten additions; 10½ pages in total, 36 × 25 cm, in condition (tears along the edges). • On the Influence of Wind on Determining the Location of a Battery Based on the Sound of a Shot. A copy of the manuscript by D.P. Ryabushinsky, Director of the Aerodynamic Institute in Kuchino, Privat-Dozent at the Imperial Moscow University. Kuchino, July 3, 1917. In Russian; a mimeographed copy, 6 pages, 35 × 25 cm, in good condition; On the Influence of Wind on Determining the Location of a Battery Based on the Sound of a Shot. Copy of the manuscript by D.P. Ryabushinsky, Director of the Aerodynamic Institute in Kuchino, Privat-Dozent at the Imperial Moscow University. Kuchino, July 3, 1917. In Russian, a copy printed on a rotary press, 17 pages (including the table of contents and afterword), various sizes, complete. Enclosed with