252 GENETIC STUDIES ON THE SILKWORM 
71) Stevens, N. M. 
1908. A Study of the Germ Cells of Certain Diptera, with 
Reference to the Heterochromosomes and the Phenomena of 
Synapsis. Jour. Exp. Zool. Vol. V, pp. 359-374. 
72) Sturtevant, A. H. 
1913 a. The Linear Arrangement of Six Sex-linked Factors in 
Drosophila, as shown by their Mode of Association. Jour. Exp. 
Zool. Vol. XIV, pp. 43-59. 
73) 1913 t)» A Third Group of Linked Genes in Drosophila 
ampelophila. Science, N. S. Vol. XXXVII, pp. 990-992. 
1914 a. See 1 1 . 
74) 1914 b. The Reduplication Hypothesis as Applied to Drosophila. 
Amer. Nat. Vol. XLVIII, pp. 535-549. 
75) 1915b. No Crossing Over in the Female of the Silkworm Moth. 
Ibid. XLIX, pp. 42-44. 
76) Swingle, W T. 
1 9 1 1 . Dimorphism of the Gametes of Oenothera. Science, N. S. 
XXXIII, pp. 897-899. 
Tanaka, Y. 
1914 a. See 14. 
1914 b. See 1 5. 
77) De Vries. H. 
191 1. Ueber doppeltreciproke Bastarde von Oenothera biennis. L. 
und 0. muricata L. Biol. Centralbl. Bd. XXXI, pp. 97- io 4» 
78) I9'3» Gruppenweise Artbildung, pp. 30-107. 
79) Yatsu, N. 
1 9 1 3. Notes on the Spermatogenesis of the Wild and Domesticated 
Silkworms. Annot. Zool. Jap., Vol. VII, pp. 215-220. 
80) 
4. Multiple Allelomorphism. 
Castle, W. E. and Fish, H- D. 
