2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89396We analyse a recently reported neutron interference experiment to measure a geometric phase and attempt to bring out the inadequacy of the ``phase modulo 2π" approach to the geometric phase. A modified neutron interferometer experiment to observe 2nπphase changes of topological origin resulting from closed circuits around singularities in the parameter space of the experiment is proposed.Latex 6 pages;1 postscript figure; originally submitted to Phys.Rev.Lett.; at present forms part of a pending proposal for a neutron interferometer experiment; note addedQuantum Physicstext