SCIENTIFIC PAMPHLETS -- A collection of 18 pamphlets, offprints and parts of Die Naturwissenschaften, collected by F. Ian G. Rawlins, bound in 2 volumes and including: P.A.M. DIRAC. The Fundamental Equations of Quantum Mechanics, offprint from the Proceedings of the Royal Society A, Vol. 109, 1925, inscribed by the author; Quantum Mechanics and a Preliminary Investigation of the Hydrogen Atom, offprint from the Proceedings of the Royal Society A, vol. 110, 1926 -- R.G. LUNNON. Atomic Dimensions offprint from the Proceedings of the Physical Society of London, vol. 38, pt.2, 1926, inscribed by the author and with an autograph note signed bound in -- Albert EINSTEIN. Newton's Mechanik und ihr Einfluss auf die Gestaltung der theoretischen Physik, from Die Naturwissenschaften, Pt. 12, 25th March 1927 and Die Ersten Zehn Jahre der Theorie von Niels Bohr über den Bau der Atome, being pt. 27 of Die Naturwissenschaften 6th July, 1923, a special issue with articles by scientists, including Planck, Born and Hertz, bound in later cloth and half cloth. (2)