Abstract
A preliminary examination was made of the formation and structure of the classical vortex ring. It is inferred from the experimental evidence that the configuration is not a true ring, but a layer of disperse fluid rolled about a circular axis. The stability of this pseudo-ring was found to be a result of the stability of its two rolled layers. The evidence suggests that a thin layer of fluid demarcated by two surfaces of discontinuity of opposite vorticity is relatively stable. A qualitative investigation was made of the flow patterns within the structure, but no attempt was made to relate velocities to ring geometry or to the physical characteristics of the ambient fluid.
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