A simple laboratory model utilizes an oscillating grid to produce a turbulent front in a linearly stratified fluid. The motion of the front is studied visually using laser fluorescence and neutrally buoyant tracer particles. When the turbulence is vigorous near the grid, stratification has no effect. As the front propagates away, vertical scales become limited by stratification, as postulated by Ozmidov. The breakup of the front can be identified at the nondimensional time Nt=10. Here a series of layers are formed which intrude into the surrounding nonturbulent fiuid. The vertical scale of these layers is also predicted using Oznidov's postulate. It is approximately 7 times the estimated Ozmidov scale at Nt=10. The advance of individual intrusions comprising the front is characterized by a local Froude number which decreases as the intrusions lengthen. The mechanism of advance is intimately connected with wave motions produced at the turbulent end of the intrusions. ¿American Geophysical Union 1987