TY - JOUR T1 - On the First Changes in the Ova of the Mammifera in Consequence of Impregnation, and on the Mode of Origin of the Chorion JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 127 SP - 339 EP - 345 PY - 1837/01/01/ UR - http://dx.doi.org/10.1098/rstl.1837.0020 M3 - doi:10.1098/rstl.1837.0020 AU - Jones, T. ER -