- On Certain Problems Of Vertebrate Embryology
- The System Of Branchial Sense Organs and Their Associated Ganglia In Ichthyopsida: A Contribution To The Ancestral History Of Vertebrates
- The Birth-period Of Trichosurus Vulpecula
- The Span of Gestation and the Cause of Birth: A Study of the Critical Period and Its Effects In Mammalia
- The Determination of Sex in Animal Development

















