  We report the results of our continued study of arcminute scale anisotropy in
the Cosmic Microwave Background (CMB) with the Berkeley-Illinois-Maryland
Array. The survey consists of ten independent fields selected for low infrared
dust emission and lack of bright radio point sources. With observations from
the Very Large Array (VLA) at 4.8 GHz, we have identified point sources which
could act as contaminants in estimates of the CMB power spectrum and removed
them in the analysis. Modeling the observed power spectrum with a single flat
band power with average multipole of \ell_{eff}=6864, we find
dT=14.2^{+4.8}_{-6.0} \mu K at 68% confidence. The signal in the visibility
data exceeds the expected contribution from instrumental noise with 96.5%
confidence. We have also divided the data into two bins corresponding to
different spatial resolutions in the power spectrum. We find
dT_1=16.6^{+5.3}_{-5.9} \mu K at 68% confidence for CMB flat band power
described by an average multipole of \ell_{eff}=5237 and dT_2<26.5 \mu K at 95%
confidence for \ell_{eff}=8748.
