We discuss the role of the U(1) axial anomaly in the spin structure functions
of the nucleon, with particular emphasis on how one might determine its x
dependence in present and future deep inelastic scattering experiments. We
focus on the C-odd spin structure function g3 and also the deuteron structure
function g1^d.Comment: 11pages Latex, 6 Figs. appended as .ps files after main text,
Cavendish preprint HEP-93/