TY - JOUR T1 - Sixth Letter on Voltaic Combinations JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 132 SP - 137 EP - 155 PY - 1842/01/01/ UR - http://dx.doi.org/10.1098/rstl.1842.0009 M3 - doi:10.1098/rstl.1842.0009 AU - Daniell, J. ER -