TY - JOUR T1 - On the Constitution of the Resins. Part IV. JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 4 SP - 218 EP - 220 PY - 1837/01/01/ UR - http://dx.doi.org/10.1098/rspl.1837.0109 M3 - doi:10.1098/rspl.1837.0109 AU - Johnston, J. ER -