Segmentation and formation of the layers, pp. 214-227. General growth of the embryo, pp. 227-232. Embryonic membranes and yolk-sack, pp. 232-239. Comparative history of the Mammalian foetal membranes, pp. 239-257. Comparative histology of the placenta, pp. 257-259. Evolution of the placenta, pp. 259-261. Development of the Guinea-pig, pp. 262-265. The human embryo, pp. 265-270.
The Works of Francis Maitland Balfour, Volume 3 (of 4) · The Wunder Library — complete classics, free to read, with narration.