  An optical "pseudogap" is usually assumed to open at low T in the "anomalous
Drude" absorption, which models the optical conductivity sigma(omega)
(proportional to omega-1) of HCTS by a linewidth Gamma (on the order of 1000
cm-1) varying with omega. In the sigma(omega) of BSCO, measured down to 10
cm-1, we have resolved instead: i) a normal Drude term with Gamma=35 cm-1 at 30
K, in very good agreement with transport data; ii) a strong band peaked in the
far infrared (FIR), likely due to bound charges, whose tail exhibits the
omega-1 dependence. As the FIR peak softens for decreasing T, it opens a
pseudogap-like depression in sigma(omega) accordingly to ordinary sum rules.
