TY - JOUR T1 - On the Comparative Toxicity of Theobromine and Caffeine, as Measured by their Direct Effect upon the Contractility of Isolated Muscle JF - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934) VL - 82 IS - 559 SP - 568 EP - 574 PY - 1910/09/09/ UR - http://dx.doi.org/10.1098/rspb.1910.0051 M3 - doi:10.1098/rspb.1910.0051 AU - Veley, V. AU - Waller, A. ER -