  In order to obtain a census of the pre-stellar and star-forming molecular
cores, we have begun an unbiased survey in CS and N2H+ of the L1630 and L1641
molecular clouds. The use of these two molecular species enables us to quantify
and disentangle the effects of depletion often seen in CS observations of dense
cores. The spectral line data will provide essential kinematical information
not present in similar studies of the sub-millimeter dust-continuum, enabling
us to examine the overall core to core velocity dispersion and study the
effects of infall and outflows around known sub-mm and infra-red sources. Here
we present our initial observations of part of L1630, taken during the
commissioning phase of the FCRAO On-the-Fly Mapping system in January 2002.
