TY - JOUR T1 - The Croonian Lecture: On the Normal Motions of the Human Eye in Relation to Binocular Vision JF - Proceedings of the Royal Society of London (1854-1905) VL - 13 SP - 186 EP - 199 PY - 1863/01/01/ UR - http://dx.doi.org/10.1098/rspl.1863.0046 M3 - doi:10.1098/rspl.1863.0046 AU - Helmholtz, H. ER -