TY - JOUR T1 - On the Existence of a Rudimentary Head-Kidney in the Embryo Chick JF - Proceedings of the Royal Society of London (1854-1905) VL - 27 SP - 443 EP - 446 PY - 1878/01/01/ UR - http://dx.doi.org/10.1098/rspl.1878.0076 M3 - doi:10.1098/rspl.1878.0076 AU - Balfour, F. AU - Sedgwick, A. ER -