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   52074
   We propose a 40-ks ASCA observation of G 359.2-0.8, an axisymmetric
   radio nebula referred to as ``The Mouse''. This unusual nebula is one
   of the several axisymmetric radio sources discovered during the mid-
   1980s. Their physical nature is a mystery. It has been proposed that
   such nebulae are the work of relativistic outflows from either a fast
   moving pulsar or a moving binary system. An ASCA observation of the
   spectrum and time series analysis of the Mouse would make it possible
   to distinguish between these models and contribute greatly to the
   resolution of this decade old mystery.
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