Merism and sex in Spinax niger. Biometrica, 3, 313–362
On the Formation of the Pelvic Plexus, with Especial Reference to the Nervus Collector in the Genus Mustelus. Philosophical Transactions of the Royal Society of London, Series B, Containing Papers of a Biological Character, 192, 331–351
DOI: 10.1098/rstb.1900.0006