Brief comment on W.S. Warren et al II: Optical NMR and the B-(3) field.

It is pointed out that the only possible artifact, free optical NMR (ONMR) shift of up to 0.1 Hz reported by Warren et al. [1] is the same precisely, 0.1 Hz, as that predicted by B-(3) theory. However, the great majority of t he data by Warren et al. are almost completely artifactual and cannot be us ed to discriminate between different ONMR mechanisms with any objectivity. Some references to B(3) theory and recent ONMR data uncited by Warren et al . are pointed out, data which show that the Warren group's failure to see v ery well known [2,3] polarization-dependent effects of irradiation in NMR i s a major design failure, not one of theory.