TY  - JOUR
T1  - On the Impregnation of the Ovum in the Amphibia (Second Series Revised), and on the Direct Agency of the Spermatozoon. 
JF  - Abstracts of the Papers Communicated to the Royal Society of London (1843-1854)
VL  - 6
SP  - 214
EP  - 217
PY  - 1850/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1850.0077
M3  - doi:10.1098/rspl.1850.0077
AU  - Newport, G.
ER  -