Unpublished paper, 'Visible direction' by James Jago Additions to Jago's paper 'Visible direction: Being an elementary contribution to the study of monocular and binocular vision' (see AP/55/8), including three pages of geometrical diagrams relating to optics. Subject: Physiology / Optics Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 21 of the Proceedings of the Royal Society as 'Visible direction: being an elementary contribution to the study of monocular and binocular vision'. 11 March 1873