TY - JOUR T1 - The Origin of Osmotic Effects. IV.-Note on the Differential Septa in Plants with Reference to the Translocation of Nutritive Materials JF - Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character (1905-1934) VL - 84 IS - 571 SP - 226 EP - 229 PY - 1911/09/14/ UR - http://dx.doi.org/10.1098/rspb.1911.0070 M3 - doi:10.1098/rspb.1911.0070 AU - Armstrong, H. AU - Armstrong, E. ER -