The theological and rheo-optical properties of nematic solutions of ro
dlike polymers are discussed. Magnetic field induced instability in th
e twist geometry is discussed in terms of the flow properties of these
solutions. The theological properties of these nematic solutions are
compared to isotropic solutions of the same polymer. The behavior in s
heaf flow of nematic solutions is discussed in terms of the Ericksen-L
eslie equations. Deviations from those solutions are also discussed in
context to polymeric nematics.