Journal of the Franklin Institute, Vol 211, Nos 1261-1266, January-June 1931
Philadelphia: The Franklin Institute 1931. First Edition. , 820 pages. The entire volume offered. Black buckram gilt, ex-library with the usual markings (properly withdrawn). As often the case, individual issue wrappers were not bound in. Sound and clean. Good. Cloth. 
Contains many interesting articles including: The diamond mines of South Africa ,F.Lynwood Garrison,Pages 197-224; The depression of density produced by the presence of bromide in the developer of photographic emulsions exposed to light and to x-rays, A.P.H. Trivelli, E.C. Jensen, Pages 335-347; Dynamical analysis of machines, R. Eksergian, Pages 353-366; Determinations of the size-frequency distribution of residual (undevelopable) grains of a photographic emulsion, E.C. Jensen, A.P.H. Trivelli, Pages 489-494; X-rays in the steel industry, H.H. Lester, Pages 567-579; Modern methods of fire fighting, C.B. White, Pages 757-760, IN1, 761-775 and others.