Using pure parallel opportunities with STIS, we propose to obtain
slitless spectroscopy with the G750L grism to search for emission
line galaxies at intermediate to high redshift. Field galaxy surveys
have shown that at high redshift most galaxies have strong emission 
lines, and are compact and blue.  This suggests that star formation
rates were higher than at present, and that AGN may have been more
frequent.  The low background and high resolution of HST seperates
these objects from the background.  Short exposures with the 50CCD
imaging mode will provide the wavelength zero-point calibration.  
In addition, the images will help to determine the connection
between galaxy morphology and spectral type as a function of
redshift.  At low galactic latitude the same technique will be
used to search for low mass stars and brown dwarfs.  The data
will be placed immediatley into the Hubble Data Archive.