This report covers the second part of the investigation on the indium‐tin system. The first part, published in 1939, recorded preliminary findings in the study of the fusion diagram and of the x‐ray experiments. The present report covers lattice constant measurements, density measurements, electric conductivity measurements, and thermal measurements. The dissociation temperatures of the intermetallic compounds β and γ were found to be 126.5° C and 124.0° C respectively. No arrest points were detected for the peritectic reaction on the indium‐rich side of the compound γ. The eutectic reaction occurs at a liquid composition of 48.5 atom per cent tin and 116.3° C. Both of the intermediate phases, β and γ, are very soft and ductile.