  Measurements were made at SLAC of the cross section for scattering 29 GeV
electrons from carbon at a laboratory angle of 4.5 degrees, corresponding to
0.03<x<0.1 and 1.3<Q^2<2.7 GeV^2. Values of R=sigma_L/sigma_T were extracted in
this kinematic range by comparing these data to cross sections measured at a
higher beam energy by the NMC collaboration. The results are in reasonable
agreement with pQCD calculations and with extrapolations of the R1990
parameterization of previous data. A new fit is made including these data and
other recent results.
