The B-2u --> A(1g) fluorescence quantum yield of benzene has been obtained for excitations from 250 to 150 nm in the solvents n-hexane, isooctane, n-perfluorohexane, n-pentane, cyclohexane, and cis-decalin. In n-hexane and isooctane, measurements have been made over a range of benzene concentrations from 0.11(2) to 11.2 M (the neat liquid). In dilute solutions, the sudden losses in fluorescence as the excitation wavelength sweeps from the first into the second absorption system and then again as the excitation wavelength sweeps from the second into the third absorption system are correlated with the behavior of benzene vapor in the region of channel three. Increasing the benzene concentration causes abatements in;he rate of loss of fluorescence with decreasing excitation wavelength in the regions of the second and third absorption systems and, above 2 M, causes a reversal of this,rate so as to cause a recovery of the fluorescence in the region of the third absorption system. These changes are correlated with the effects of benzene concentration on the electronic absorption spectrum and with reported effects of clustering on the multiphoton photoionization efficiency.