Using the upgraded Beijing Spectrometer, we have measured the total cross section for e(+)e(-) annihilation into hadronic final states at center-of-mass energies of 2.6, 3.2, 3.4, 3.55, 4.6, and 5.0 GeV. Values of R, sigma(e(+)e(-)-->hadrons)/sigma(e(+)e(-)-->&mgr;(+)&mgr;(-)), are determined.

Purely leptonic decays of the charged D meson have been studied using the reaction e q e y ™ D )q D y at a center of mass energy of 4.03 GeV. A search was performed for D ™ mn recoiling against a D 0 or D q which had been m y0.05y0.02 D y150y40MeV.