Zr9602 (isotopic concentration 90 per cent) was irradiated by slow neutrons in the Oak Ridge pile. The half-period of the niobium daughter element, chemically separated from zirconium, was found to be 72.1 ~ 0.7 rain. and that of Zr 97 to be 17.0 + 0.2 hr. By aluminum absorption and Feather analysis, maximum beta ray eneriegs of 2.50 Mev and 1.40 Mev were measured for parent and daughter element, respectively. Lead absorption of the quantum radiations of the equilibrium mixture indicated a gamma ray at 0.74 Mev as well as a softer component. Coincidence absorption yielded a maximum gamma ray energy of 1.42 Mev. The beta-gamma coincidence rate of Nb 97 was constant, independent of the beta ray energy and of such magnitude as to suggest that each beta ray is followed on the average by 0.7 Mev of gamma ray energy. The beta-gamma coincidence rate of the equilibrium mixture showed that the hard beta rays of Zr 97 proceed directly to the metastable state of Nb 97. Very few beta rays of Zr 97 fire in immediate coincidence with any gamma radiation. * Assisted by the joint program of the ONR and the AEC.