Note 455 — Chapter XVI
Reading edition
"Die Abstammung der Anneliden u. Chordaten," Jen. Zeits., xxxix., pp. 151-76, 1905. "The Gastrulation of the Vertebrates," Q.J.M.S., xlix., pp. 403-19, 1906. "Early Ontogenetic Phenomena in Mammals," Q.J.M.S., liii., pp. 1-181, 1909.