1 86 Sargant. — Reconstruction of a Race of Primitive A ngiosperms 
70. Sargant. E. : A New Type of Transition from Stem to Root in the Vascular System of 
Seedlings. Ann. of Bot., xiv, 1900, p. 633. 
71. : The Origin of the Seed Leaf in Monocotyledons. New Phytologist, i, 1902, 
p. 107. 
72. : A Theory of the Origin of Monocotyledons, founded on the Structure of their 
Seedlings. Ann. of Bot., xvii, 1903, p. 1. 
73. : Evolution of Monocotyledons. Bot. Gaz., xxxvii, 1904, p. 325. 
74. Sargant, E., and Robertson, A. : The Anatomy of the Scutellum in Zea Mais. Ann. of Bot., 
xix, 1905, p. 1 1 5. 
75. Schaffner, J. H. : The Life-history of Sagittaria variabilis. Bot. Gaz., xxiii, 1897, p. 252. 
76. Schaffner, Mabel: The Embryology of the Shepherd’s Purse. Ohio Naturalist, vii, 1906, 
p. 1. 
77. Schlickum, A. : Morphologischer und anatomischer Vergleich der Kotyledonen und ersten 
Laubblatter der Keimpflanzen der Monokotylen. Bibliotheca botanica, xxxv, 1896. 
78. Schmid, B. : Beitiage zur Embryo-Entvvickelung einiger Dicotylen. Bot. Zeit., lx, 1902, p. 207. 
79. Schnegg, H. : Beitiage zur Kenntniss der Gattung Gunnera. Flora, xc, 1902, p. 16 r. 
80. Scott, D. H. : The Flowering Plants of the Mesozoic Age, in the Light of Recent Discoveries. 
Journ. Roy. Micr. Soc., 1907, pp. 129-141. 
80 a. Seward, A. C. : Presidential Address to Section K., British Association, 1903. 
81. Solereder, H. : Systematische Anatomie der Dicotyledonen. Stuttgart, 1899. 
82. Solms-Laubach, H. Graf zu : Ueber monocotyle Embryonen mit scheitelbiirtigem Vegetations- 
punkt. Bot. Zeit., xxxvi, 1878, p. 65. 
83. Sterckx, R. : Recherches anatomiques sur l’embryon et les plantules dans la famille des 
Renonculac^es. Mem. Soc. Roy. Sci. de Liege, iii, vol. ii, 1899. 
84. Strasburger, E. : Ueber Befruchtung und Zelltheilung. Leipzig, 1878. 
85. : Angiospermen und Gymnospermen. Jena, 1879. 
86. : Die Samenanlage von Drimys Winteri und die Endospermbildung bei 
Angiospermen. Flora, Erg.-bd. 1905, p. 215. 
87. Tansley, A. G., and Thomas, E. N. : The Phylogenetic Value of the Vascular Structure of 
Spermophytic Hypocotyls. Report of Brit. Ass., Section K„ 1906, p. 761. 
88. Thomas, E. N. : A Theory of the Double Leaf-trace founded on Seedling Structure. New 
Phytologist, vi, 1907, p. 77. 
89. Wieland, G. R. : American Fossil Cycads. Carnegie Institute, Washington, 1906. 
90. Worsdell, W. C. : The Nature of the Vascular System of the Stem in certain Dicotyledonous 
Orders. Ann. of Bot., xvi, p. 599. 
91. Zeiller, R. : Les progres de la paUobotanique de l’ere des Gymnospermes. Progressus Rei 
Botanicae, ii, 1907, p, 171. 
