Optical region elemental abundance analyses of B and A stars. V. The normal stars theta Leonis, tau Herculis, 14 Cygni and 5 Aquarii.

Abundance analyses using optical region data and fully line-blanketed model atmospheres have been performed for four sharp-lined normal B and A type stars. This work extends the results presented in the first and fourth papers of this series. The microturbulent velocities of all the stars studied in this series are found to follow the same relation with temperature. Some of the stars studied in this paper are found to have one or two anomalous abundances, such as the zirconium abundance of θ Leo.