TY - JOUR T1 - An Account of the Preliminary Experiments and Ultimate Construction of a Refracting Telescope of 7.8 Inches Aperture, with a Fluid Concave Lens JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 119 SP - 33 EP - 46 PY - 1829/01/01/ UR - http://dx.doi.org/10.1098/rstl.1829.0009 M3 - doi:10.1098/rstl.1829.0009 AU - Barlow, P. ER -