TY - JOUR T1 - On an Aplanatic Searcher, and Its Effects in Improving High-Power Definition in the Microscope. JF - Proceedings of the Royal Society of London (1854-1905) VL - 18 SP - 327 EP - 330 PY - 1869/01/01/ UR - http://dx.doi.org/10.1098/rspl.1869.0071 M3 - doi:10.1098/rspl.1869.0071 AU - Royston-Pigott, G. ER -