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The development and formation of the incompressible, axisymmetric, turbulent starting jet based on a similarity method of solution are considered. The time-dependent Navier-Stokes equations of motion describing the phenomena are reduced to a similar-solution form with the aid of dimensional analysis. The resulting equations are then solved by a finite-difference, numerical method. Theoretical predictions of stream function, vorticity, and velocities in similarity variables are presented. Transient flow patterns of the starting jet at successive intervals of time in terms of spatial variables are obtained from these similar-solution results. An experimental investigation is also reported. Velocity measurements are made at downstream sections greater than 20 diameters away from the jet nozzle. The axial-velocity results obtained at locations greater than 30 diameters away from the jet nozzle exhibit similarity and are in good agreement with predictions. The results obtained in the radial direction are not so numerous as the axial-velocity results owing to the large velocity fluctuations encountered in the flow field. , Nevertheless, a satisfactory qualitative agreement has been obtained. Suggestions for future work are included.