TY - JOUR T1 - An Account of the Two Sorts of the Helmontian Laudanum, Communicated to the Publisher by the Honourable Robert Boyle, Together with the Way of the Noble Baron F. M. van Helmont (Son to the Famous Johannes Baptista,) of Preparing His Laudanum JF - Philosophical Transactions (1665-1678) VL - 9 SP - 147 EP - 149 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1674.0035 M3 - doi:10.1098/rstl.1674.0035 AU - Boyle, R. ER -