| BREMER, J. L.: The Earliest Bloodvessels in Man, Am. Jour. Anat., 1914, xvi. | 1 |
| EVANS, H. M.: On the Development of the Aortæ, Cardinal and Umbilical Veins and Other Bloodvessels of the Vertebrate Embryos from Capillaries, Anat. Rec., 1909, iii. | 2 |
| EVANS, H. M.: The Development of the Vascular System, Keibel and Mall, Manual of Human Embryology. | 3 |
| HIS, W.: Anatomie Menschlichen Embryonen, Leipzig, 1880–85. | 4 |
| MACCALLUM, J. B.: On the Muscular Architecture and Growth of the Ventricles of the Heart, Johns Hop. Hosp. Rep., 1900, ix. | 5 |
| MALL, F. P.: A Study of the Structural Unit of the Liver, Am. Jour. Anat., 1906, v. | 6 |
| MALL, F. P.: On the Muscular Architecture of the Ventricles of the Human Heart, Am. Jour. Anat., 1911, xi. | 7 |
| MALL, F. P.: The Development of the Internal Mammary and Deep Epigastric Arteries in Man, Johns Hop. Hosp. Bulletin, 1898. | 8 |
| STOCKARD, C. R.: A Study of Wandering Mesenchymal Cells on the Living Yolk Sac and Their Developmental Products: Chromatophores, Vascular Endothelium and Blood Cells, Am. Jour. Anat., 1915, xviii. | 9 |
| STREETER, G. L.: The Development of the Venous Sinuses of the Dura Mater in the Human Embryo, Am. Jour. Anat., 1915, xviii. | 10 |
| THOMA, R.: Text-book of General Pathology and Pathological Anatomy, Translated by Bruce, London, 1896. | 11 |