TY - JOUR T1 - Letter from W. De La Rue, F.R.S., to Prof. Stokes, Sec. R.S., Relative to the Observations Taken with the Kew Heliograph. JF - Proceedings of the Royal Society of London (1854-1905) VL - 20 SP - 198 EP - 199 PY - 1871/01/01/ UR - http://dx.doi.org/10.1098/rspl.1871.0046 M3 - doi:10.1098/rspl.1871.0046 AU - Rue, W. ER -